阅读说明：本技术 一种双根钻杆绳索取芯方法、系统及其控制器 (Double-drill-rod rope coring method, system and controller thereof ) 是由 秦绪文 黄芳飞 于亮 冯起赠 许本冲 陈宋英 王俊珠 汪明鑫 孙明远 卢秋平 于 2020-06-12 设计创作，主要内容包括：本发明公开了一种双根钻杆绳索取芯方法、系统及其控制器,所述方法包括以下步骤：先向钻井中的第一双根钻杆中投放绳索取芯钻具内管,再抓取至少两根单根钻杆放置在钻杆上扣组件上进行连接接成一根第二双根钻杆,然后将第二双根钻杆的上接头与顶驱连接、下接头与第一双根钻杆连接,再通过顶驱驱使钻杆开始钻进作业,每钻进一定距离,通过绳索取芯工具将绳索取芯钻具内管取出,并放置到岩心处理区域。本发明通过钻杆上扣组件将多个单根钻杆组成双根钻杆,以减少占用钻井口的时间,提高钻井作业的效率,同时减少钻杆与顶驱连接的一半次数,降低井下事故发生的几率。(The invention discloses a double-drill-rod rope coring method, a double-drill-rod rope coring system and a controller thereof, wherein the method comprises the following steps: put into rope core drill tool inner tube in the first pair of drilling rod in the well drilling earlier, snatch two piece at least single drilling rods and place and connect into a two root drill rods of second on detaining the subassembly on the drilling rod again, then drive the top connection and the top of two root drill rods of second and be connected, the lower clutch is connected with first pair of drilling rod, the rethread top drives and orders about the drilling rod and begin to creep into the operation, every certain distance that creeps into, take out rope core drill tool inner tube through rope core-taking instrument to place the rock core and handle the region. According to the invention, a plurality of single drill rods are combined into double drill rods through the drill rod upper buckling assembly, so that the time for occupying a drilling hole is reduced, the efficiency of drilling operation is improved, half times of connection of the drill rods and the top drive is reduced, and the probability of underground accidents is reduced.)

1. The utility model provides a two drilling rod wire line coring system which characterized in that: the device comprises a drill rod pipe grabbing assembly, a drill rod upper buckle assembly, a top drive, a rope coring tool, a rope coring drilling tool inner pipe and a controller, wherein the drill rod pipe grabbing assembly, the drill rod upper buckle assembly, the top drive and the rope coring tool are all connected with the controller;

the drill rod grabbing assembly is used for grabbing a single drill rod to the drill rod buckling assembly from a drill rod placing area of the deck; moving the double drill rods on the drill rod upper buckling assembly to a top drive;

the drill rod upper buckle assembly is used for connecting two single drill rods into a second double drill rod;

the top drive is used for driving the double drill rods to drill to a preset depth or lifting the double drill rods to a position above the sea level;

the rope coring tool is used for taking out the inner pipe of the rope coring drilling tool in the drill rod.

2. The dual drill pipe wireline coring system of claim 1, wherein: the length of the drill pipe placing area on the deck is greater than or equal to 20 meters.

3. The dual drill pipe wireline coring system of claim 1, wherein: the top drive still includes the relief valve, the output of relief valve is connected with the input that the top was driven to make the rope coring tool when drawing the rope coring drilling tool inner tube, the rope coring tool loops through the relief valve, the top drives inside, the drilling rod can be dismantled with the rope coring drilling tool inner tube and be connected.

4. The dual drill pipe wireline coring system of claim 3, wherein: the rope coring tool comprises a rope coring winch and a rope coring fisher, and the rope coring winch is detachably connected with the inner pipe of the rope coring drilling tool through the rope coring fisher.

5. A double-drill-rod wire-line coring method is applied to a controller of a double-drill-rod wire-line coring system and is characterized by comprising the following steps:

s1: putting an inner pipe of a rope core drill tool into a first double drill rod in a well;

s2: grabbing two single drill rods from a drill rod placing area on a deck and placing the two single drill rods on a drill rod upper buckling assembly, and connecting the two single drill rods into a second double drill rod through the drill rod upper buckling assembly;

s3: connecting an upper joint of a second double drill rod with a top drive, and connecting a lower joint of the second double drill rod with a first double drill rod in a well, so that the first double drill rod and the second double drill rod form a coring pipe column;

s4: judging whether the drilling depth of the second double drill rods is equal to the height of the single drill rod, if so, stopping drilling, and executing S5, otherwise, executing S4 again;

s5: taking out the inner pipe of the rope core drill tool by using a rope core tool and placing the inner pipe into a core processing area;

s6: and judging whether the depth reaches the preset depth, if so, ending the process, and if not, executing S7.

S7: and judging whether the drilling depth of the second double drill rods is equal to the height of the second double drill rods, if so, executing S1, otherwise, putting the inner pipe of the rope core drilling tool into the second double drill rods in the well drilling, and executing S4.

6. The double drill pipe wireline coring method of claim 5, wherein: the S5 is specifically realized by the following steps:

s51: taking out the inner pipe of the rope core drill tool by using a rope core tool and placing the inner pipe into a core processing area;

s52: judging whether the weather condition needs emergency platform avoidance, if not, executing S6, and if so, executing S53;

s53: the coring pipe column is lifted upwards by the height of a single second double-drill-rod through the top drive;

s54: disassembling the second double drill rods from the core taking pipe column, and placing the second double drill rods in a drill rod placing area of the deck;

s55: and judging whether a core-taking tubular column exists in the well, if so, executing S53, and if not, finishing.

7. The double drill pipe wireline coring method of claim 5, wherein: the S2 is specifically realized by the following steps:

s21: grabbing a first single drill rod from a drill rod placing area of a deck and placing the first single drill rod on a drill rod upper buckle assembly;

s22: then, a second single drill rod is grabbed from the drill rod placing area of the deck and placed on the drill rod upper buckle assembly, so that the upper joint of the first single drill rod is abutted against the lower joint of the second single drill rod, and the number of the second single drill rod is accumulated;

s23: and judging whether the number of the second single drill rods is smaller than a preset value, if so, executing S22, and if not, executing S24.

S24: and connecting the first single drill pipe and the second single drill pipe into a second double drill pipe through the drill pipe buckling assembly, and executing S3.

8. A controller for a dual drill pipe wireline coring system, comprising:

a memory for storing program instructions;

a processor for executing the program instructions to perform the dual drill pipe wireline coring method of any of claims 5-7.

Technical Field

The invention relates to the technical field of drilling, in particular to a double-drill-rod wire coring method, a double-drill-rod wire coring system and a controller thereof.

Background

In the ocean, the influence of weather on a drilling ship is very large, under general conditions, small flood and storm are often selected for drilling construction, but the ocean environment changes more frequently, the lower the current deep hole drilling efficiency is, the longer the conventional construction time is, the greater the construction risk is, the severe weather changes during construction can cause the prior construction to be abandoned completely after the wind leaves, and even a vicious circle is formed due to the weather. Therefore, for complicated and variable marine environments, how to improve the coring efficiency of deep hole drilling is a problem to be solved by the technical personnel in the field.

Chinese patent No.: CN201510041204.4 discloses a combined coring method for ocean fourth-line drilling, which relates to the technical field of drilling, and the method comprises the following steps: 1) coring by using a hole bottom rope hammering coring device; 2) when the hole bottom rope hammering coring device encounters a hard clay layer, a fourth system rotary rope coring device for balancing the heave of waves is adopted for coring; 3) fishing a fourth system rotary rope coring device for balancing the heave of the waves; 4) when the sample is a sandy soil layer with the particle size larger than that of fine sand or the sample is a gravel soil layer and the alarm signal appears in the fourth system of rotary rope coring device for balancing the heave of the waves, repeating the operation of the step 1); when the particle size of the sample is a hard clay layer and an alarm signal appears in the fourth system rotary rope coring device for balancing the heave of the wave, the opening pressure of the coring device is increased, the fourth system rotary rope coring device for balancing the heave of the wave is used for coring, and the step 3) is repeated; however, the patent still has the following defects: the top drive connecting frequency of the single joint coring method is high, the risk of sand deposition and drill sticking exists in the single joint connecting process, and the probability of complex underground conditions is increased; meanwhile, the single-joint coring drilling mode increases the single-joint time compared with the stand column operation, so that the whole coring operation time is prolonged, and the coring operation cost is increased.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a double-drill-rod wire-line coring system which can solve the problem of low coring efficiency in high-depth drilling.

The invention also aims to provide a double-drill-rod wire line coring method which can solve the problem of low coring efficiency in high-depth hole drilling.

The invention also aims to provide a controller of the double-drill-rod wire coring system, which can solve the problem of low coring efficiency in high-depth hole drilling.

In order to achieve one of the above purposes, the technical scheme adopted by the invention is as follows:

a double-drill-rod wire-line coring system comprises a drill-rod pipe grabbing assembly, a drill-rod upper-buckling assembly, a top drive, a wire-line coring tool, an inner pipe of the wire-line coring drilling tool and a controller, wherein the drill-rod pipe grabbing assembly, the drill-rod upper-buckling assembly, the top drive and the wire-line coring tool are all connected with the controller;

the drill rod grabbing assembly is used for grabbing a single drill rod to the drill rod buckling assembly from a drill rod placing area of the deck; moving the double drill rods on the drill rod upper buckling assembly to a top drive;

the drill rod upper buckle assembly is used for connecting two single drill rods into a second double drill rod;

the top drive is used for driving the double drill rods to drill to a preset depth or lifting the double drill rods to a position above the sea level;

and the rope coring tool is used for taking out the inner pipe of the rope coring drilling tool in the drill rod and placing the inner pipe into a core processing area.

Preferably, the length of the deck for placing the drill pipe is greater than or equal to 20 meters.

Preferably, the top drive further comprises a safety valve, the output end of the safety valve is connected with the input end of the top drive, so that when the rope coring tool extracts the inner pipe of the rope coring drilling tool, the rope coring tool can be connected with the inner pipe of the rope coring drilling tool in a detachable manner through the safety valve, the top drive and the drill pipe.

Preferably, the rope coring tool comprises a rope coring winch and a rope coring fisher, and the rope coring winch is detachably connected with the inner pipe of the rope coring drill through the rope coring fisher.

In order to achieve the second purpose, the technical scheme adopted by the invention is as follows:

a double-drill-rod wire-line coring method is applied to a controller of a double-drill-rod wire-line coring system and comprises the following steps:

s1: putting an inner pipe of a rope core drill tool into a first double drill rod in a well;

s2: grabbing two single drill rods from a drill rod placing area on a deck and placing the two single drill rods on a drill rod upper buckling assembly, and connecting the two single drill rods into a second double drill rod through the drill rod upper buckling assembly;

s3: connecting an upper joint of a second double drill rod with a top drive, and connecting a lower joint of the second double drill rod with a first double drill rod in a well, so that the first double drill rod and the second double drill rod form a coring pipe column;

s4: judging whether the drilling depth of the second double drill rods is equal to the height of the single drill rod, if so, stopping drilling, and executing S5, otherwise, executing S4 again;

s5: taking out the inner pipe of the rope core drill tool by using a rope core tool and placing the inner pipe into a core processing area;

s6: and judging whether the depth reaches the preset depth, if so, ending the process, and if not, executing S7.

S7: and judging whether the drilling depth of the second double drill rods is equal to the height of the second double drill rods, if so, executing S1, otherwise, putting the inner pipe of the rope core drilling tool into the second double drill rods in the well drilling, and executing S4.

Preferably, the step S5 is specifically implemented by the following steps:

s51: taking out the inner pipe of the rope core drill tool by using a rope core tool and placing the inner pipe into a core processing area;

s52: judging whether the weather condition needs emergency platform avoidance, if not, executing S6, and if so, executing S53;

s53: the coring pipe column is lifted upwards by the height of a single second double-drill-rod through the top drive;

s54: disassembling the second double drill rods from the core taking pipe column, and placing the second double drill rods in a drill rod placing area of the deck;

s55: and judging whether a core-taking tubular column exists in the well, if so, executing S53, and if not, finishing.

Preferably, the step S2 is specifically implemented by the following steps:

s21: grabbing a first single drill rod from a drill rod placing area of a deck and placing the first single drill rod on a drill rod upper buckle assembly;

s22: then, a second single drill rod is grabbed from the drill rod placing area of the deck and placed on the drill rod upper buckle assembly, so that the upper joint of the first single drill rod is connected with the lower joint of the second single drill rod, and the number of the second single drill rod is accumulated;

s23: and judging whether the number of the second single drill rods is smaller than a preset value, if so, executing S22, and if not, executing S24.

S24: and connecting the first single drill pipe and the second single drill pipe into a second double drill pipe through the drill pipe buckling assembly, and executing S3.

In order to achieve the third purpose, the technical scheme adopted by the invention is as follows:

a controller for a dual drill pipe wireline coring system, comprising:

a memory for storing program instructions;

and a processor for executing the program instructions to perform the above-described dual drill pipe-line coring method.

Compared with the prior art, the invention has the beneficial effects that: two single drill rods form double drill rods through the drill rod upper buckling assembly, so that the time of occupying a drilling hole is reduced, the efficiency of drilling operation is improved, half times of connection between the drill rods and the top drive is reduced, and the probability of underground accidents is reduced.

Drawings

FIG. 1 is a flow chart of a double drill pipe line coring method of the present invention.

Fig. 2 is a schematic structural view of a single drill pipe according to the present invention.

In the figure: 1-upper joint; 2-lower joint.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention will be further described with reference to the accompanying drawings and the detailed description below:

the double-drill-rod rope coring method is used in marine exploration and mining engineering, and the double-drill-rod rope coring system is arranged on a drilling ship; the drill rod pipe grabbing component is a drill rod pipe grabbing machine, is special for mechanical equipment for grabbing tubular workpieces, and is mainly used for engineering machinery for loading and unloading oil pipes, sleeves and drill rods; the drill rod screwing component is a drill rod screwing machine which is similar to the structure of a drill rod screwing and unscrewing device for a drilling machine, which is recorded in the specification and has the Chinese patent application number of CN 203008824; the TOP drive is a TOP drive drilling device TDS (TOP DRIVE DRILLING SYSTEM), can directly rotate a drill rod from the upper space of the derrick and feed downwards along a special guide rail to complete various drilling operations such as rotary drilling of the drill rod, circulating drilling fluid, connecting of an upright column, upper shackle and reverse reaming; the single drill pipe has a pipe length of 30ft, which is equal to about 9.5 meters, and in this embodiment, the first double drill pipe and the second double drill pipe are essentially double drill pipes assembled from an equal number of the same single drill pipe, wherein the first and second are used only to indicate their positions.