阅读说明：本技术 井下工具和可控制地崩解工具的方法 (Downhole tool and the method for being controllably disintegrated tool ) 是由 许英晴 张智慧 拉贾尼·萨蒂 列维·奥伯格 德里克·谢尔比·贝尔 金姆·安·诺伦 道恩· 于 2018-02-01 设计创作，主要内容包括：一种可控制地崩解井下制品的方法,包括将第一制品设置在井下环境中,所述第一制品是要崩解的所述井下制品；在设置所述第一制品之后将第二制品设置在所述井下环境中,所述第二制品携载装置、化学物质或包括前述至少一者的组合；以及用来自所述第二制品的所述装置、所述化学物质或包括前述至少一者的所述组合来崩解所述第一制品。(A method of it being controllably disintegrated underground product, including the first product is arranged in subsurface environment, first product is the underground product to be disintegrated；The second product is arranged in the subsurface environment after first product is set, the second product Portable carrying device, chemical substance or including at least one aforementioned combination；And with from second product described device, the chemical substance or including at least one the aforementioned combination be disintegrated first product.)

1. a kind of method for being controllably disintegrated underground product, the method are characterized in that:

First product (10) are arranged in subsurface environment, first product (10) is the underground product to be disintegrated；

The second product (50) are arranged in the subsurface environment after first product (10) is set, second product (50) Portable carrying device (45,400), chemical substance (40) or including at least one aforementioned combination；And

With from the described device (45,400) of second product (50), the chemical substance (40) or including aforementioned at least one The combination of person is disintegrated first product (10).

2. the method as described in claim 1, wherein described device (45,400) is destructor (82), and the method It is further characterized in that, from second product (50) release described device (45,400), the chemical substance (40) or including aforementioned The combination of at least one.

3. method according to claim 2, wherein when second product (50) is arranged near first product (10) When, from second product (50) release described device (45,400), the chemical substance (40) or including it is aforementioned at least one Combination.

4. method as claimed in claim 3, the method is further characterized in that, from described in second product (50) release Device (45,400), the chemical substance (40) or including at least one aforementioned combination after, by second product (50) It is pulled away from first product (10).

5. method according to claim 2, the method is further characterized in that, Xiang Suoshu subsurface environment applies pressure, will From second product (50) discharge described device (45,400), the chemical substance (40) or including it is aforementioned at least one Combination is delivered to first product (10).

6. method according to claim 2, the method is further characterized in that, activates the destructor (82).

7. method as claimed in claim 6, wherein second product (50) includes transmitter, and the destructor It (82) include receiver, the receiver is configured to receive the signal (70,75) sent by the transmitter.

8. the method as described in claim 1, wherein the chemical substance (40) includes being encapsulated in the intracorporal Corrosive Materia of shell； And the method also includes being arranged in first product (10) in the chemical substance (40) nearby later from the shell Discharge the Corrosive Materia.

9. the method as described in claim 1, wherein the described device (45,400) in second product (50) is that receiving is quick-fried The device (45,400) of fried powder charge, and the method also includes using the described device (45,400) of receiving explosive charge by institute It states the first product (10) and is broken to multiple discrete fragments (900).

10. method as claimed in any one of claims 1-9 wherein, wherein first product (10) include Zn, Mg, Al, Mn, Its alloy or including at least one aforementioned combination.

11. a kind of method for being controllably disintegrated underground product, the method are characterized in that:

Underground product is arranged in subsurface environment, the underground product includes:

Basis material, described matrix material include Zn, Mg, Al, Mn, its alloy or including at least one aforementioned combination；And

Device (45,400), described device are attached to or are embedded in the underground product, and described device (45,400) is configured At the disintegration for facilitating the underground product；And

Activate described device (45,400) to be disintegrated the underground product.

12. method as claimed in claim 11, the method are further characterized in that, the second product (50) are arranged in the well In lower environment, and is activated with the signal (70,75) received from second product (50) and be attached to or be embedded in described Described device (45,400) in one product (10).

13. the method as described in any one of claim 11 or 12, wherein the underground product has surface covering, the table Finishing coat includes the metal layer for being resistant to the metal of corrosion of downhole fluid.

14. a kind of downhole component, the downhole component is characterized in that:

Product, the product include:

Basis material, described matrix material include Zn, Mg, Al, Mn, its alloy or including at least one aforementioned combination；And

Device (45,400), described device is attached to or is embedded in the product, and described device (45,400) has been configured to Help the disintegration of the product.

15. downhole component as claimed in claim 14, the downhole component is further characterized in that the second product (50), described Two products (50) include transmitter, and the transmitter is configured to generate signal (70,75) and is attached to or is embedded in institute to activate State the described device (45,400) in product.

Background technique

Oil and gas well usually utilizes wellbore section or tool, these wellbore sections or tool are only needed due to its function The limited operating life that there is the service life much smaller than well.After component or utility services function are completed, it is necessary to by it It removes or is disposed to restore the original size of fluid path for using, including hydrocarbon production, CO₂It seals up for safekeeping.Routinely By by component or tool milling or drilling out pit shaft and completing the disposition of component or tool, these are usually the behaviour being time-consuming and expensive Make.

Recently, voluntarily disintegration or the downhole tool without intervention have been developed.Instead of milling or drill-well operation, these tools Engineering material can be dissolved by using various wellbore fluids to remove.Since downhole tool is often subject to high pressure, usually The disintegratable material for needing to have high mechanical strength is to ensure the integrality of downhole tool.In addition, material must initially have most Few disintegration, so that maintaining the size and pressure integrity of tool during utility services.It is desirable that material is completed in instrumental function It can promptly be disintegrated later, because of the more early disintegration of material, well puts into production in which can get over block.

Voluntarily disintegration or a challenge of the downhole tool without intervention are, once the situation in well allows engineering material Corrosion reaction starts, and disintegrating procedue can start.Therefore, the disintegration period can not control as user it is expected, but by Well situation and product property dominate.For certain applications, uncertain and tool sizes associated with the disintegration period are being disintegrated The variation of period can be operated to well and planning brings difficulty.Uncontrolled disintegration is also possible to that well production can be postponed.Therefore, non- Often expectation develops the viability in tool with the minimum downhole tool for being disintegrated or not being disintegrated, and executes so that they have It engineering properties needed for its expectation function and is then promptly disintegrated.

Summary of the invention

It is a kind of controllably be disintegrated underground product method include by the first product be arranged in subsurface environment, described first Product is the underground product to be disintegrated；The second product is arranged in the subsurface environment after first product is set In, the second product Portable carrying device, chemical substance or including at least one aforementioned combination；And with from second system The described device of product, the chemical substance are disintegrated first product including at least one the aforementioned combination.

It is a kind of controllably be disintegrated underground product method include by underground product be arranged in subsurface environment, the underground Product includes: basis material, and described matrix material includes Zn, Mg, Al, Mn, its alloy or including at least one aforementioned combination； And device, described device are attached to or are embedded in the underground product, described device is configured to facilitate the underground The disintegration of product；And activation described device is to be disintegrated the underground product.

A kind of downhole component includes product, and the product includes: basis material, described matrix material include Zn, Mg, Al, Mn, its alloy or including at least one aforementioned combination；And device, described device are attached to or are embedded in the product, Described device is configured to facilitate the disintegration of the product.

Detailed description of the invention

Being described below should not be viewed as being limiting in any way.With reference to attached drawing, similar components number is similar:

Figure 1A to Fig. 1 G shows the illustrative methods of disintegration underground product, and wherein Figure 1A shows the of setting in the wellbore One product；Figure 1B shows execution fracturing operation；Fig. 1 C shows Portable carrying device or the second product of chemical substance is arranged in the wellbore； Fig. 1 D is shown from second device release device or chemical substance；Fig. 1 E shows the second product and generates signal to activate device；Fig. 1 F It shows and pressure is applied to discharge Corrosive Materia to chemical substance；And it is removed that Fig. 1 G shows the first product.

Fig. 2A to Fig. 2 C show disintegration underground product another illustrative methods, wherein Fig. 2A show the first product and The second product near first product is set, and the second product carries the device for facilitating the disintegration of the first product；Fig. 2 B is shown First device is broken to fragment by the device on the second product；And Fig. 2 C shows the first product and is removed.

Fig. 3 A to Fig. 3 D shows another illustrative methods of disintegration underground product, and wherein Fig. 3 A is shown is embedded in wherein There is the first product setting of device in the wellbore；Fig. 3 B shows execution fracturing operation；Fig. 3 C shows the second system with transmitter Product are arranged in the wellbore, and transmitter generates signal to activate the device in the first product；And Fig. 3 D shows the device in insertion Disintegratable product is removed after being activated.

Fig. 4 is included in the partial cross-sectional view for being wherein embedded with the downhole component of product of destructor.

Specific embodiment

Present disclose provides effectively postpone or reduce various downhole tools in the viability disintegration of tool but can be The method for no longer needing tool to activate the disintegrating procedue of tool later.The disclosure, which additionally provides a kind of accommodate, has controlled disintegration wheel The downhole component of wide disintegratable product.

In one embodiment, a kind of method being controllably disintegrated underground product includes that the first product is arranged in well In lower environment, first product is the underground product to be disintegrated；The second product is arranged in well after the first product is set In lower environment, the second product Portable carrying device, chemical substance or including at least one aforementioned combination；And with from second The device of product, chemical substance are disintegrated the first product including at least one aforementioned combination.

The underground product to be disintegrated includes metal, metallic composite or including at least one aforementioned combination.Select well The material of lower product makes product have minimum corrosion or controlled corrosion in subsurface environment.In a particular embodiment, underground Product has what is determined in aqueous 3wt.%KCl solution under 200 ℉ (93 DEG C) to be less than about 100mg/cm²/ when, be less than about 10mg/cm²/ when or be less than about 1mg/cm²/ when corrosion rate.

Optionally, product has the surface covering of the corrosion of tolerance downhole fluid, such as metal layer.As used herein, " tolerance " refer to encounter corrosivity downhole conditions (that is, salt water, hydrogen sulfide etc., under the pressure for being greater than atmospheric pressure, Yi Ji At a temperature of 50 DEG C) when making any part exposure of product, metal layer is more than or equal to 24 hours or 36 hours It is not corroded in period or with minimum controlled corrosion.

Then downhole operations are executed, the downhole operations can be to be held during drilling well, volume increase, complete well, production or reparation Capable operation.Specifically mentioned fracturing operation.

When no longer needing underground product, by Portable carrying device, chemical substance or including it is aforementioned at least one combination Two products are arranged in subsurface environment.Device and chemical substance on second product facilitate the disintegration of the first product.It is exemplary Device includes destructor and the device for accommodating explosive charge, such as perforating gun.Suitable chemical substance includes Corrosive Materia, Such as solid acid or gel acid.Exemplary corrosion material includes gel HCl, gel H₂SO₄, phosphoric acid, niobic acid, SO₃、SO₂, sulphur Change acid etc..The combination of chemical substance can be used.Optionally, chemical substance has the shell of encapsulation corrosive chemical. The exemplary materials of shell include polyethylene glycol, polypropylene glycol, polyglycolic acid, polycaprolactone, polydioxanone, poly- hydroxyl Aliphatic ester, poly butyric ester, its copolymer or including at least one aforementioned combination.

When being disintegrated the first product, device and chemical substance can be from the second article deliveries to the first product.There are several sides Formula is by device and chemical substance from the second article delivery to the first product.In one embodiment, it will be carried via casing string Device, chemical substance or including it is aforementioned at least one combination the second product be arranged near the first product, for example, second system Product travel downwardly along pit shaft and stop at the top of the first product.Then from the second product release device, chemical substance or Including at least one aforementioned combination.After release device and chemical substance, the second product is drawn to separate first product Safe distance, so that the second product is not influenced by the condition of the first product of disintegration.In another embodiment, the second product edge Pit shaft travel downwardly and far from the first product safe distance at stop, then from the second product release device, chemistry system Product or including at least one aforementioned combination.Device and chemical substance can be then carried to by the pressure applied to subsurface environment First product.

After the device of such as destructor is delivered to the first product, device can be timed device or from the second product It is transferred to the signal activation of destructor.Timer can be a part of destructor.In destructor by from the second product In the case where the signal triggering received, the second product may include the transmitter for efficiently generating command signal, and explode Device can have the receiver for receiving and processing such command signal.Signal be not particularly limited and including electromagnetic radiation, Acoustical signal, pressure or including at least one aforementioned combination.After activating destructor, underground product can be broken to from Scattered fragment, fragment can further corrode in downhole fluid and be disintegrated or flow back into completely the ground of pit shaft.

In the case where chemical substance is delivered to the product to be disintegrated, when applying pressure to chemical substance, can release Put the Corrosive Materia in chemical substance.Corrosive Materia is reacted with the product to be removed, and rapidly by corrosion Fall.

Device on second product is also possible to accommodate the device of explosive charge, such as perforating gun.In this embodiment In, not from the second product release device.When the second product of Portable carrying device is arranged in away from the article suitable distance to be removed, The product that device will be disintegrated is broken to fractionlet.The fragment being destroyed can also corrode in downhole fluid to be carried back Smaller fragment is fully disintegrated or become before to the ground of pit shaft.

First product and the second product are not particularly limited.Exemplary first product includes packer, pressure break ball and plug, all Such as bridge plug, pressure break plug.Exemplary second product includes bottom hole assemblies (BHA).BHA may include installation tool and plug, Bridge plug, pressure break plug etc..

In another embodiment, the device of such as destructor is attached to or is embedded in the product to be disintegrated.One Denier no longer needs product or the downhole component including product, and dress is just activated by timer or from the second product received signal It sets.Second product may include the transmitter for efficiently generating command signal, and destructor can have and receive and process The receiver of such command signal.

Figure 1A to Fig. 1 G shows the illustrative methods of disintegration underground product.In the method, the first product 10 is set It sets in pit shaft 20.Then fracturing operation is executed, to produce fracture 30.By Portable carrying device or the second product of chemical substance 40 50 settings are in the wellbore.From 50 release device of the second product or chemical substance 40 and it is delivered to the first product 10.When device 40 is When destructor, signal 70 is can be generated to activate device 40 in the second product 50.Optionally, when chemical substance 40 is delivered to When one product 10, apply pressure 80 to chemical substance 40, with chemically substance release explosive materials.After activating device or After discharging corrosive chemical, product 10 is disintegrated rapidly.

Fig. 2A to Fig. 2 C shows another illustrative methods of disintegration underground product.In the method, by disintegratable Product 100 is arranged in pit shaft 200.The operation of such as fracturing operation is executed to produce fracture 300.To have by casing string 600 There is the setting of downhole tool 500 of device 400 in the wellbore.Once device 500 be remotely located from disintegratable device 100 it is suitable away from From place, product 100 can be broken to fractionlet 900 by device 400 (for example, it is perforating gun).The fragment being destroyed can be by Downhole fluid, which carries, returns to ground.The fragment being destroyed can also corrode there are downhole fluid to be carried back Smaller fragment is fully disintegrated or become before to the ground of pit shaft.

In the method shown in Fig. 3 A to Fig. 3 D, it will be arranged in the disintegratable product 15 for being wherein embedded with device 45 in pit shaft In 25.Fracturing operation is executed, to produce fracture 35.The downhole tool 55 of activation device 56 with such as transmitter is arranged In the wellbore.Signal 75 can be generated to activate device 45 in activation device.Once device 45 is activated, product 15 is just disintegrated simultaneously And it is then removed from pit shaft.

Fig. 4 is the partial cross-sectional view of downhole component.The component is included therein the product for being embedded with destructor.Such as figure Shown in 4, downhole component includes the annular body 81 with the runner (not shown) passed through；It is arranged around annular body 81 Truncated cone-shaped member 83；Carry in annular body 81 and be configured to engage the sealing element of a part of truncated cone-shaped member 83 85；And the sliding section 84 being arranged around annular body 81.Truncated cone-shaped member 83 has the destructor 82 being embedded in. Once no longer needing downhole component, so that it may activate device 82.After truncated cone-shaped member disintegration, coaster loses support, thus Downhole component is caused to be detached from from casing wall.

As described herein, the product to be disintegrated includes basis material, and described matrix material includes metal, metallic composite Or including at least one aforementioned combination.Metal includes metal alloy.Basis material has controlled corrosion speed in downhole fluid Rate, the downhole fluid can be water, salt water, acid or including at least one aforementioned combination.In one embodiment, underground Fluid includes potassium chloride (KCl), hydrochloric acid (HCl), calcium chloride (CaCl₂), calcium bromide (CaBr₂) or zinc bromide (ZnBr₂), or Including at least one aforementioned combination.

Exemplary matrix material includes zinc metal, magnesium metal, aluminum metal, manganese Metal, its alloy or including aforementioned at least one The combination of person.Basis material further includes Ni, W, Mo, Cu, Fe, Cr, Co, its alloy or including at least one aforementioned combination.

Specifically mentioned magnesium alloy.Magnesium alloy suitable for using includes the alloy of magnesium Yu following item: aluminium (Al), cadmium (Cd), calcium (Ca), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), silicon (Si), silver (Ag), strontium (Sr), thorium (Th), tungsten (W), zinc (Zn), zirconium (Zr), or the combination including at least one of these elements.Particularly useful alloy include with Ni, W, Co, Cu, Fe or other metals at alloy magnesium.It may include different amounts of alloying element or microelement to adjust the corrosion speed of magnesium Rate.For example, four (cadmium, calcium, silver and zinc) in these elements influence corrosion rate with acceleration mild to moderate, and four kinds its He has bigger influence to corrosion by element (copper, cobalt, iron and nickel).Various combination including the above alloying element is to realize difference The Exemplary commercial magnesium alloy of the corrosion resistance of degree includes but is not limited to for example with aluminium, strontium and manganese at those of alloy, such as AJ62, AJ50x, AJ51x and AJ52x alloy, and with aluminium, zinc and manganese at those of alloy, such as AZ91A-E alloy.

As used herein, metallic composite refers to the composite material with following item: including nanometer basis material Substantially continuous cellular nano matrix；A variety of discrete particles comprising granule core materials, the granule core materials packet Include Mg, Al, Zn or the Mn or a combination thereof being dispersed in cellular nano matrix；And bee is extended through between discrete particles The solid adhesive layer of nest shape nanometer matrix.Matrix includes the deformation powder particle formed by powder compaction particle, the powder Last particle includes granular core and at least one coating, and coating is combined to form substantially continuous bee by solid state bonds Nest shape nanometer matrix simultaneously leaves granular core as discrete particles.Discrete particles are big with about 5 μm to about 300 μm of average grain It is small.Nanometer basis material includes Al, Zn, Mn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta, Re or Ni or its oxide, carbonization The combination of any material in object or nitride or previous materials.The chemical composition of nanometer basis material is different from granular core The chemical composition of core material.

Material can be formed by coated particle, such as Zn, Mg, Al, Mn, its alloy or including at least one aforementioned combination Powder.Powder generally have about 50 microns to about 150 microns and more specifically about 5 microns it is micro- to about 300 microns or about 60 The granular size that 140 microns of meter Zhi Yue.Powder can be used such as the methods of chemical vapor deposition, anodization and be coated, or Person by the physical methods such as freeze grinding, ball milling and metal or metal oxide (such as Al, Ni, W, Co, Cu, Fe, these The oxide of one of metal etc.) mixing.Coating can have the thickness of about 25nm to about 2,500nm.Al/Ni and Al/W are The specific example of coating.There may be more than one coatings.Additional coatings may include Al, Zn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta or Re.Such cladding magnesium powder is referred to herein as controlled electrolysis material (CEM).Then by using etc. it is quiet Press (is cold-pressed under about 275MPa to about 550MPa) in about 40ksi to about 80ksi and then is forged or be sintered and mechanical Processing is to mould or compress CEM material, to provide the intended shape and size of disintegratable product.Including the composite wood being consequently formed The CEM material of material describes in U.S. Patent number 8,528,633 and 9,101,978.

Optionally, basis material further includes carbide, nitride, oxide, sediment, dispersoid, glass, carbon etc. Additive, to control the mechanical strength and density of disintegratable product.

Optional surface covering (metal layer) on the underground product to be disintegrated, which is included under conditions down-hole around, is resistant to corrosion And it can be by underground in the case where existing and discharging from the second product or be attached/be embedded in the chemical substance or device of the first product Any metal that fluid removes.In one embodiment, metal layer includes aluminium alloy, magnesium alloy, kirsite or ferroalloy.Gold Belonging to layer includes single layer, or multiple layers including identical or different metal.

Metal layer has the thickness less than or equal to about 1,000 micron (that is, about 1 millimeter).In one embodiment, golden Belong to layer can have about 10 microns to about 1,000 microns, specifically about 50 microns it is micro- to about 750 microns and more specifically about 100 The thickness that 500 microns of meter Zhi Yue.Metal layer can be formed by any appropriate method for deposited metal, including chemical plating process Or pass through electro-deposition.

The various embodiments of the disclosure set forth below.