阅读说明：本技术 一种完井永置式分层自动测调注水采油自主测量系统 (Well completion permanent-placed type layered automatic measuring and regulating water injection oil extraction autonomous measuring system ) 是由 李建飞 吕树宏 于 2020-03-31 设计创作，主要内容包括：本发明公开了石油钻探应用领域的一种完井永置式分层自动测调注水采油自主测量系统,包括钻探管和发电系统,钻探管包括上接头主体、下接头主体和套管,所述上接头主体和下接头主体之间安装有套管,所述套管靠近上接头主体的一端安装有流量计,所述流量计的另一端连通上接头主体,所述流量计的两端分别开设有出水口和进水口；本发明在钻探管中部的的独立空间内安装有测调工作筒安装,缩短了测调工作筒内部传感器与发电机之间的距离独立模块化设计,减少了所需的连接钢缆,降低了线路损耗,节约了成本,提高了讯通断线的问题；系统采用自主井下发电结构,体积小、重量轻、电气性能稳定、耐候性好、抗雷电冲击能力强、抗振动能力强。(The invention discloses a well completion permanent set type layered automatic measuring and regulating water injection oil extraction autonomous measuring system in the field of oil drilling application, which comprises a drilling pipe and a power generation system, wherein the drilling pipe comprises an upper connector main body, a lower connector main body and a sleeve, the sleeve is arranged between the upper connector main body and the lower connector main body, one end of the sleeve, which is close to the upper connector main body, is provided with a flowmeter, the other end of the flowmeter is communicated with the upper connector main body, and two ends of the flowmeter are respectively provided with a water outlet and a water inlet; according to the invention, the testing and adjusting working barrel is arranged in the independent space in the middle of the drilling pipe, so that the independent modular design of the distance between the sensor inside the testing and adjusting working barrel and the generator is shortened, the required connecting steel cable is reduced, the line loss is reduced, the cost is saved, and the problems of communication on-off are solved; the system adopts an autonomous underground power generation structure, and has the advantages of small volume, light weight, stable electrical performance, good weather resistance, strong lightning impulse resistance and strong vibration resistance.)

1. The utility model provides a well completion is put formula layering automatic measure and regulate water injection oil recovery autonomous measurement system forever, includes drilling pipe and power generation system, its characterized in that: the drill pipe comprises an upper joint main body (1), a lower joint main body (2) and a sleeve (3), the sleeve (3) is arranged between the upper joint main body (1) and the lower joint main body (2), one end, close to the upper joint main body (1), of the sleeve (3) is provided with a flowmeter (4), the other end of the flowmeter (4) is communicated with the upper joint main body (1), and two ends of the flowmeter (4) are respectively provided with a water outlet (5) and a water inlet (6);

the casing pipe (3) mainly comprise subsurface safety valve (311), top seal sealer (312), measure and regulate working barrel (313), isolation sealer (314) and bottom sealer (315), subsurface safety valve (311) is installed to the one end of casing pipe (3), three measure and regulate working barrel (313) are installed to the other end of subsurface safety valve (311), three measure and regulate working barrel (313) are adjacent, top seal sealer (312) is installed to measure and regulate working barrel (313) one end of being close to subsurface safety valve (311), the measure and regulate working barrel (313) one end of keeping away from subsurface safety valve (311) is fixed with top seal sealer (312) and installs bottom sealer (315), every two install isolation sealer (314) between measure and regulate working barrel (313).

2. The system of claim 1, wherein the system comprises: one side of the underground safety valve (311) is provided with a sliding sleeve (316), each measuring and adjusting working cylinder (313) is provided with an electric measuring and adjusting working cylinder (3131), one end of the measuring and adjusting working cylinder (313) far away from the underground safety valve (311) is provided with a circular plug (317), and the surface wall of the measuring and adjusting working cylinder (313) is provided with a sand control screen pipe (318).

3. The system of claim 1, wherein the system comprises: the flowmeter (4) is communicated with the sleeve (3) through an overflowing channel (3133), and a circuit bin (3132) is installed on the inner wall of the sleeve (3).

4. The system of claim 3, wherein the system comprises: and an integrated water nozzle (33) is arranged at one end of the overflowing channel (3133).

5. The system of claim 4, wherein the system comprises: the integrated water nozzle (33) is communicated with the flowmeter (4) through a high-pressure connecting pipe (32), and an in-pipe pressure sensor (41) and an out-of-pipe pressure sensor (42) are installed inside the flowmeter (4).

6. The system of claim 1, wherein the system comprises: the sleeve (3) further comprises a cable sealing joint upper interface (34), a cable penetrating hole (35), a cable sealing joint lower interface (36), a power supply, a communication CPU circuit board (37) and a measurement and motor control circuit board (38), the cable sealing joint upper interface (34) and the cable sealing joint lower interface (36) are arranged at two ends of the interior of the sleeve (3), the cable penetrating hole (35) is arranged between the cable sealing joint upper interface (34) and the cable sealing joint lower interface (36), and the power supply, the communication CPU circuit board (37) and the measurement and motor control circuit board (38) are mounted on the inner surface wall of the sleeve (3).

7. The system of claim 6, wherein the system comprises: the cable penetrating hole (35) penetrates through the top seal sealer (312), the measuring and adjusting working barrel (313) and the isolation sealer (314) and is used for providing working power.

8. The system of claim 1, wherein the system comprises: the temperature sensor is further fixedly mounted inside the sleeve (3), and the lightning arrester and the radio frequency signal transmitter are fixedly mounted on the upper joint main body (1).

9. The system of claim 1, wherein the system comprises: the power generation system is arranged in a space formed in the inner wall of the well and mainly comprises a water turbine.

Technical Field

The invention belongs to the technical field of oil drilling and well completion, and particularly relates to a permanently-arranged layered automatic measuring, regulating, injecting water and oil extracting autonomous measuring system for well completion.

Background

In order to adapt to the environmental conditions of high temperature and high pressure at the bottom of a well, the measuring sensor is required to meet the requirements of high temperature and high pressure resistance and has the characteristics of strong corrosion resistance and vibration resistance. Because of the size constraints of the downhole itself, there are strict requirements on the volume of the measurement sensor. The pressure sensor, the temperature sensor, the flow sensor, the bottom hole power generation unit and the measurement processing circuit unit which are arranged in the oil production rod have high requirements on the reliability of the sensors, and the insulating strength, the high humidity and high salinity environment resistance, the lightning impact resistance and the vibration resistance of the processing circuit are important technical requirements for the completeness of the intelligent well completion.

Conventional completion systems do not meet the above requirements. The existing oil production underground measuring and adjusting system usually adopts the method that underground single line power supply is supplied and collected through the ground, and signals collected by a steel cable 3000m underground are transmitted to the ground for processing and analysis. The method has the advantages of large line loss, frequent cable breakage, signal loss and high comprehensive cost. And the measuring system is arranged at the bottom of the well and is easy to contact with the well wall, the protective performance is poor, and the reliability is low. The underground measurement can only rely on the ground to provide energy without a power supply, and signals can not be collected frequently, and only one set of underground measurement can be placed down again.

Disclosure of Invention

The invention aims to solve the technical problems by using the measuring and adjusting working barrel aiming at the defects in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a permanently-installed layered automatic measurement and regulation water injection oil extraction autonomous measurement system for well completion comprises a drilling pipe and a power generation system, wherein the drilling pipe comprises an upper joint main body, a lower joint main body and a sleeve, the sleeve is installed between the upper joint main body and the lower joint main body, one end, close to the upper joint main body, of the sleeve is provided with a flowmeter, the other end of the flowmeter is communicated with the upper joint main body, and two ends of the flowmeter are respectively provided with a water outlet and a water inlet;

the casing pipe mainly comprises subsurface safety valve, top seal sealer, measure and regulate working barrel, isolation sealer and bottom sealer, subsurface safety valve is installed to sheathed tube one end, three measure and regulate working barrel is installed to the other end of subsurface safety valve, it is three measure and regulate the working barrel and adjacent, the measure and regulate working barrel one end that is close to subsurface safety valve is installed and is sealed the sealer on top, the measure and regulate working barrel one end of keeping away from subsurface safety valve is fixed with top seal sealer and installs bottom sealer, per two install isolation sealer between the measure and regulate working barrel.

Preferably, a sliding sleeve is installed on one side of the underground safety valve, an electric measuring and adjusting working barrel is installed on each measuring and adjusting working barrel, a round plug is installed at one end, far away from the underground safety valve, of each measuring and adjusting working barrel, and a sand control screen pipe is installed on the surface wall of each measuring and adjusting working barrel.

Preferably, the flowmeter is communicated with the sleeve through a flow passage, and the inner wall of the sleeve is provided with a circuit bin.

Preferably, one end of the overflowing channel is provided with an integrated water nozzle.

Preferably, the integrated water nozzle is communicated with a flowmeter through a high-pressure connecting pipe, and an in-pipe pressure sensor and an out-pipe pressure sensor are arranged in the flowmeter.

Preferably, the sleeve further comprises a cable sealing joint upper interface, a cable through hole, a cable sealing joint lower interface, a power supply, a communication CPU circuit board, a measurement and motor control circuit board, the cable sealing joint upper interface and the cable sealing joint lower interface are arranged at two ends of the interior of the sleeve, the cable through hole is formed between the cable sealing joint upper interface and the cable sealing joint lower interface, and the power supply, the communication CPU circuit board and the measurement and motor control circuit board are mounted on the inner surface wall of the sleeve.

Preferably, the cable penetrating hole penetrates through the top sealing device, the measuring and adjusting working barrel and the isolation sealing device and is used for providing working power supply.

Preferably, a temperature sensor is further fixedly mounted inside the sleeve, and a lightning arrester and a radio frequency signal transmitter are fixedly mounted on the upper joint main body.

As still another preferable mode, the power generation system is installed in the open space of the inner wall of the well and mainly consists of a water turbine.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the measuring and adjusting working barrel is arranged in the independent space in the middle of the drilling pipe, so that the independent modular design of the distance between the sensor in the measuring and adjusting working barrel and the generator is shortened, the required connecting steel cable is reduced, the line loss is reduced, the cost is saved, and the problem of line connection and disconnection is solved.

2. The system adopts an autonomous underground power generation structure, has small volume, light weight, stable electrical performance, good weather resistance, strong lightning impulse resistance and strong vibration resistance, and can meet the use requirements of various underground environments and harsh operation environments such as dirt, dust, high humidity, high salinity, long-term vibration and the like.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a testing and adjusting working barrel according to the present invention;

FIG. 3 is a schematic view of the interior of the testing and adjusting barrel of the present invention;

FIG. 4 is a view showing the installation position of the measuring and adjusting barrel instrument in the present invention;

fig. 5 is a schematic view of the internal structure of the casing according to the present invention.

In the figure: 1. an upper joint body; 2. a lower joint body; 3. a sleeve; 311. a downhole safety valve; 312. a top seal sealer; 313. measuring and adjusting the working barrel; 3131. electrically testing and adjusting the working barrel; 3132. a circuit bin; 3133. an overflow channel; 314. an isolation seal; 315. a bottom sealer; 316. a sliding sleeve; 317. circular blocking; 318. a sand control screen pipe; 32. a high-pressure connecting pipe; 33. an integrated water nozzle; 34. an upper interface of the cable sealing joint; 35. the cable passes through the hole; 36. a lower interface of the cable sealing joint; 37. a power supply, a communication CPU circuit board; 38. a measurement and motor control circuit board; 4. a flow meter; 41. a pressure sensor in the tube; 42. an outside pipe pressure sensor; 5. a water outlet; 6. a water inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.