CN219061575U

CN219061575U - Conveying structure with wellhead blowout prevention function

Info

Publication number: CN219061575U
Application number: CN202222299379.3U
Authority: CN
Inventors: 姚秋华; 李康
Original assignee: Gpn Petroleum Technology Co ltd
Current assignee: Gpn Petroleum Technology Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-05-23
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a wellhead blowout-preventing conveying structure, which belongs to the technical field of horizontal well testing, an oil pipe is arranged in an oil well, a screen pipe is connected to the surface of the oil pipe, holes are formed in the surface of the screen pipe, a testing instrument is connected to the inner wall of the oil pipe in a sliding manner, a cable is fixedly connected to the surface of the testing instrument, a pump truck is detachably connected to the surface of the oil pipe, a water outlet end of the pump truck is fixedly connected with a water pipe, the wellhead blowout-preventing conveying structure is provided, the testing instrument is conveyed to the bottom of a horizontal section in a hydraulic conveying manner through the pump truck, the water pipe, the oil pipe and the screen pipe, the conveying time is short, damage of cable insulation or the cable breakage can be avoided, the conveying safety of the testing instrument is guaranteed, and through the blowout preventer, the construction safety of the horizontal well testing is greatly improved, and the construction efficiency and the testing cost are reduced.

Description

Conveying structure with wellhead blowout prevention function

Technical Field

The utility model relates to the technical field of horizontal well testing, in particular to a conveying structure with wellhead blowout prevention.

Background

In the process of testing the horizontal well of the oilfield production well, a conveying device is required to convey a testing instrument, such as a washable well oil pipe conveying device for testing the horizontal well disclosed by publication No. CN205936470U, but in a conventional conveying method for testing the horizontal well of the oilfield production well, the instrument is conveyed to the bottom of a horizontal section in a mode of an oil pipe or a sucker rod, the two modes have long construction time, the wellhead is occupied for a long time to increase the testing cost for a first party, in addition, in the conveying process, the cable is easy to damage in insulation or is extruded and broken due to the rotation of the oil pipe or the sucker rod, and even the accident that the instrument falls into the well occurs, so that a great construction risk is brought to the testing party.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model aims to provide the conveying structure with the wellhead blowout prevention, which is characterized in that a testing instrument is conveyed to the bottom of a horizontal section in a hydraulic conveying mode through a pump truck, a water pipe, an oil pipe and a screen pipe, so that the conveying time is short, the damage of cable insulation or the extrusion and breaking of the cable can be avoided, the conveying safety of the testing instrument is ensured, and the blowout preventer has the blowout prevention function, the construction safety is greatly improved, the construction safety of horizontal well testing is reduced, the construction efficiency is improved, and the testing cost is reduced.

In order to solve the problems, the utility model adopts the following technical scheme.

The utility model provides a conveying structure with well head blowout prevention, includes the oil well, the internally mounted of oil well has oil pipe, oil pipe's surface connection has the screen pipe, open on the surface of screen pipe has the hole, oil pipe's inner wall sliding connection has test instrument, test instrument's surface fixedly connected with cable, oil pipe's surface detachable is connected with the pump truck, the play water end fixedly connected with water pipe of pump truck, the end that absorbs water of pump truck is provided with the water pipe that absorbs water, and the one end of water pipe that absorbs water is in the catch basin, oil pipe's one end seal fastening has the preventer, blowout preventer includes blowout preventer, blowout preventer and blowout preventer, reciprocal seal fastening between first blowout preventer and the second blowout preventer, this conveying structure with well head blowout preventer, through the pump truck of setting up, water pipe, oil pipe and screen pipe, through hydraulic conveying mode with test instrument conveying the horizontal segment bottom, the delivery time is short, can avoid cable insulation impaired or cable to be crowded the cable to be broken moreover, guaranteed the transportation security of test to the blowout preventer has greatly reduced the construction cost has been improved through setting up blowout preventer, thereby has greatly reduced the blowout preventer, and has reduced the construction safety construction efficiency.

Further, the surface fixedly connected with connecting pipe of oil pipe, the one end of connecting pipe is equipped with the connecting seat, and the one end of connecting seat and the surface seal fastening of water pipe, the surface fixed mounting of water pipe has the control valve.

Further, the surface of the cable is in contact connection with the oil pipe and the inner wall of the blowout preventer, a sealing hole is formed in the inner wall of the blowout preventer, and the cable has a moving function.

Further, the inside fixed mounting of preventer has sealed cushion, the surface of sealed cushion is equipped with through-hole and unilateral bevel connection, the width size of unilateral bevel connection is half of through-hole diameter, and the sealed cushion can increase the connection leakproofness of blowout prevention cap.

Furthermore, the surface of blowout prevention overflow pipe is opened there is the overflow aperture, the central point of first blowout prevention pipe, second blowout prevention pipe and blowout prevention overflow pipe puts and all is equipped with the connection slotted hole, and the inner wall contact of connection slotted hole is connected with the iron separation blade, and the intensity of blowout preventer can be increased to the iron separation blade.

Further, the shape of the iron baffle is cylindrical, and a through hole is formed in the center of the iron baffle.

Compared with the prior art, the utility model has the advantages that:

(1) According to the scheme, the testing instrument is conveyed to the bottom of the horizontal section in a hydraulic conveying mode through the pump truck, the water pipe, the oil pipe and the sieve tube, the conveying time is short, damage to cable insulation or cable breakage can be avoided, and conveying safety of the testing instrument is guaranteed.

(2) According to the scheme, the blowout preventer has a blowout preventing function, so that the construction safety is greatly improved, the construction safety of horizontal well testing is reduced, the construction efficiency is improved, and the testing cost is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the blowout preventer of the present utility model;

fig. 3 is a top view of the seal cushion structure of fig. 2.

The reference numerals in the figures illustrate:

1 oil well, 2 oil pipes, 21 sieve tubes, 22 holes, 23 connecting pipes, 3 testing instruments, 31 cables, 4 pump trucks, 41 water pipes, 42 control valves, 5 blowout preventers, 51 blowout preventer overflow pipes, 52 blowout preventer caps, 53 first lubricators, 54 second lubricators, 55 overflow holes, 56 iron baffles, 57 sealing rubber gaskets, 58 through holes and 59 single-side bevel ports.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, a wellhead blowout-preventing conveying structure comprises an oil well 1, an oil pipe 2 is installed in the oil well 1, a screen pipe 21 is connected to the surface of the oil pipe 2, a hole 22 is formed in the surface of the screen pipe 21, a testing instrument 3 is slidably connected to the inner wall of the oil pipe 2, the testing instrument 3 is a horizontal well testing instrument, the structure and the working principle of the horizontal well testing instrument are all well known to those skilled in the art, a cable 31 is fixedly connected to the surface of the testing instrument 3, a pump truck 4 is detachably connected to the surface of the oil pipe 2, a high-pressure water pump is arranged on the pump truck 4, water can be conveyed into the oil pipe 2, a water pipe 41 is fixedly connected to the water outlet end of the pump truck 4, a water suction pipe is arranged at the water suction end of the pump truck 4, one end of the water suction pipe is located in a water storage tank, a blowout preventer 5 is tightly fastened to the one end of the oil pipe 2, the blowout preventer 5 can seal the inlet of the oil pipe 2, the blowout preventer 5 comprises a blowout preventer 51, a blowout preventer 52 and a blowout preventer 53 and a blowout preventer 54 are tightly fastened to the first and a blowout preventer 53.

The surface fixedly connected with connecting pipe 23 of oil pipe 2, the one end of connecting pipe 23 is equipped with the connecting seat, and the one end of connecting seat and the surface seal fastening of water pipe 41, and the surface fixed mounting of water pipe 41 has control valve 42, and the surface of cable 31 is connected with the inner wall contact of oil pipe 2 and preventer 5, and the inner wall of preventer 5 is provided with the sealed hole, and cable 31 has the function of removal.

In this embodiment, through pump truck 4, water pipe 41, oil pipe 2 and screen pipe 21 that set up, carry the test instrument 3 to the horizontal segment bottom through hydraulic conveying's mode, transfer time is short, can avoid cable 31 insulation damage or cable 31 to be crowded disconnected moreover, guaranteed the transportation security of test instrument 3.

Example 2

The inside fixed mounting of preventer 5 has sealed cushion 57, and the surface of sealed cushion 57 is equipped with through-hole 58 and unilateral bevel connection 59, and unilateral bevel connection 59's width size is the half of through-hole 58 diameter, and sealed cushion 57 can increase the connection leakproofness of blowout preventer cap 52, and the surface of blowout preventer overflow pipe 51 is opened there is overflow hole 55, and the central point of first blowout preventer 53, second blowout preventer 54 and blowout overflow pipe 51 puts and all is equipped with the connection slotted hole, and the inner wall contact of connection slotted hole is connected with iron separation blade 56, and iron separation blade 56 can increase the intensity of preventer 5, and iron separation blade 56 is cylindrical in shape, and the central point of iron separation blade 56 is opened there is the via hole.

In this embodiment, through blowout preventer 5 that sets up, have blowout preventer's function, great improvement the construction security, reduced the construction security of horizontal well test to improved the efficiency of construction, reduced the test cost.

When the horizontal well test is carried out, the oil pipe 2 with the screen pipe 21 is firstly lowered to the bottom of the oil well 1, then the testing instrument 3 is lowered into the oil pipe 2, the blowout preventer 5 is arranged at one end of the oil pipe 2, clean water is injected into the oil pipe 2 by using the pump truck 4, the clean water returns out of the well mouth from the screen pipe 21 at the bottom through the annular space, the testing instrument 3 is conveyed to the bottom of the well by using the thrust of water circulation, then pressing is stopped, the lifting cable 31 is tested according to the normal speed, the testing instrument 3 is conveyed to the bottom of the horizontal section by using the pump truck 4, the water pipe 41, the oil pipe 2 and the screen pipe 21 in a hydraulic conveying mode, the conveying time is short, insulation damage of the cable 31 or extrusion breakage of the cable 31 can be avoided, the conveying safety of the testing instrument 3 is guaranteed, and the blowout preventer 5 is arranged, so that the horizontal well test construction safety is greatly improved, the construction efficiency is improved, and the test cost is reduced.

The above description is only of the preferred embodiments of the present utility model; the scope of the utility model is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present utility model, and the technical solution and the improvement thereof are all covered by the protection scope of the present utility model.

Claims

1. The utility model provides a conveying structure with well head blowout prevention, includes oil well (1), its characterized in that: the inside mounting of oil well (1) has oil pipe (2), the surface connection of oil pipe (2) has screen pipe (21), open on the surface of screen pipe (21) has hole (22), the inner wall sliding connection of oil pipe (2) has test instrument (3), the fixed surface of test instrument (3) is connected with cable (31), the surface detachably of oil pipe (2) has pump truck (4), the play water end fixedly connected with water pipe (41) of pump truck (4), the water-absorbing end of pump truck (4) is provided with the water-absorbing pipe, and the one end of water-absorbing pipe is in the catch basin, the one end sealing fastening of oil pipe (2) has preventer (5), preventer (5) are including blowout preventer (51), blowout preventer (52), first blowout preventer (53) and second blowout preventer (54), mutual sealing fastening between blowout preventer (51) and blowout preventer (52), first blowout preventer (53) and second blowout preventer (54).

2. A delivery structure having wellhead blowout prevention as set forth in claim 1, wherein: the surface of oil pipe (2) is fixedly connected with connecting pipe (23), the one end of connecting pipe (23) is equipped with the connecting seat, and the one end of connecting seat and the surface seal fastening of water pipe (41), the surface fixed mounting of water pipe (41) has control valve (42).

3. A delivery structure having wellhead blowout prevention as set forth in claim 1, wherein: the surface of the cable (31) is in contact connection with the oil pipe (2) and the inner wall of the blowout preventer (5), and a sealing hole is formed in the inner wall of the blowout preventer (5).

4. A delivery structure having wellhead blowout prevention as set forth in claim 1, wherein: the inside fixed mounting of preventer (5) has sealed cushion (57), the surface of sealed cushion (57) is equipped with through-hole (58) and unilateral bevel connection (59), the width size of unilateral bevel connection (59) is the half of through-hole (58) diameter.

5. A delivery structure having wellhead blowout prevention as set forth in claim 1, wherein: the surface of the blowout prevention overflow pipe (51) is provided with an overflow hole (55), the central positions of the first blowout prevention pipe (53), the second blowout prevention pipe (54) and the blowout prevention overflow pipe (51) are respectively provided with a connecting slotted hole, and the inner wall of the connecting slotted hole is in contact connection with an iron baffle (56).

6. A delivery structure having wellhead blowout prevention as set forth in claim 5, wherein: the shape of the iron baffle (56) is cylindrical, and a through hole is formed in the center of the iron baffle (56).