CN216741409U

CN216741409U - Air pressure blowing cleaning device for oil field well repairing operation construction pipeline

Info

Publication number: CN216741409U
Application number: CN202220109390.6U
Authority: CN
Inventors: 张兴瑞; 李增强; 尹锐; 张凯丽; 巴红明; 王新国; 齐亚君; 雷琦
Original assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Shengli Oilfield Co
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-06-14
Anticipated expiration: 2032-01-17

Abstract

The utility model discloses an air pressure blowing cleaning device for a construction pipeline in oilfield workover operation, which comprises a wellhead device; the well-flushing device also comprises a well-flushing pipeline, a three-way joint and a check valve; the three-way joint is provided with a water inlet, an air inlet and an outlet, wherein the water inlet of the three-way joint is connected with a well washing pipeline, the air inlet of the three-way joint is connected with the outlet of the check valve, and the outlet of the three-way joint is connected with the large four-way joint of the wellhead device. And the inlet of the check valve is connected with an air source of the workover rig. The utility model enables the flushing fluid in the connecting pipeline between the vehicle-mounted pump and the wellhead to be recovered, prevents flushing water from falling to the ground, avoids environmental pollution, enables operating workers to operate conveniently and prevents accidents from happening. The construction method improves the current situation that construction liquid overflows in the existing well flushing pipeline, and achieves the effect of cleaning operation in the whole process of pump truck construction.

Description

Air pressure blowing cleaning device for oil field well repairing operation construction pipeline

Technical Field

The utility model relates to the field of tools for preventing sewage from falling to the ground to pollute the environment during the well repairing operation of an oil field, in particular to a pneumatic blowing cleaning device for a well washing pipeline during the well repairing operation of the oil field.

Background

During well repairing operation in an oil field, a pump truck is often required to carry out well washing and killing and sand washing operation. At present, the well washing and killing operation is that a vehicle-mounted pump (field called as a cement truck) is connected with a wellhead of a well to be repaired by a pipeline, and a high-pressure pump on the vehicle-mounted pump pressurizes well washing liquid and injects the well washing liquid into a well through the connected pipeline to carry out the construction of well washing and killing, sand washing and the like. The connecting pipeline between the vehicle-mounted pump and the wellhead is 20-100m, after well flushing and sand washing are finished, the pipeline is required to be disassembled from the wellhead, and the well washing liquid is reserved in the pipeline, after the pipeline is disassembled from the wellhead, the well washing liquid in the pipeline cannot be recovered into the vehicle-mounted pump and only can flow to a well site near the wellhead, so that the field pollution of well repairing operation is caused, the ground is wet and slippery, the inconvenience is brought to operation construction, the operation worker slips down when in forced operation, and safety accidents are caused.

Publication (bulletin) No.: CN105834174B, publication (public notice) day: 2018-03-09 discloses a wellhead oil pipe cleaning device, wherein an annular groove is arranged on a connecting disc, the annular groove is communicated with the outside through a transfusion hole, a connecting port is arranged at the outer end of the transfusion hole, a liquid separating cylinder is arranged inside the connecting disc, the annular groove is surrounded by the liquid separating cylinder to form an annular cavity, a plurality of liquid separating holes which are distributed uniformly are arranged on the liquid separating cylinder, the upper ends of the liquid separating holes are communicated with the annular groove, a nozzle is arranged at the lower end of the liquid separating hole and fixed on the inner wall of the liquid separating cylinder, cleaning liquid injected from the connecting port can only be sprayed out from the nozzle, the connecting disc is arranged on a wellhead cross, the liquid separating cylinder is arranged in the wellhead cross, an annular disc of a self-sealing rubber cylinder is placed on the connecting disc, the lower part of the self-sealing rubber cylinder is arranged in the liquid separating cylinder, a gland is used for buckling the self-sealing rubber cylinder, and the gland, the connecting disc and the wellhead cross are connected into a whole through bolts, the oil pipe passes through the gland, the self-sealing rubber cylinder, the connecting disc, the liquid separation cylinder and the wellhead four-way joint, the self-sealing rubber cylinder wraps the oil pipe, and crude oil in the well cannot drop on a well site.

Publication (bulletin) No.: CN103288288B, publication (public notice) day: 2014-04-16 relates to a wellhead circulation treatment device for mobile well-flushing water. The device is used for treating the effluent of the water injection well on site, directly reinjecting the effluent after the effluent is qualified through the high-pressure pump truck, and collecting and utilizing the crude oil discharged from the water injection well, thereby saving water sources and energy sources. The device includes flocculation and coagulation two-stage reaction and one-level oil recovery, and the iron powder is added simultaneously in the flocculation, makes the wadding group in the sewage subside fast through magnetic adsorption and collects, and the clear water after the processing is direct reinjection. The device is driven by a direct current motor, does not need to depend on an external power supply, is particularly suitable for field construction operation, can treat sewage discharged from a water injection well on site, directly reinjects the qualified sewage into the water injection well through a high-pressure pump truck, saves well washing water, does not need the cost of tank car pulling, and has the characteristics of high treatment speed, no need of a power supply, multiple purposes, low treatment cost and energy conservation.

Publication (bulletin) No.: CN105386733A, publication (public notice) day: 2016-03-09 relates to a well head cleaning device for oil pipes and sucker rods in well repair operation. The problems that the existing well repairing operation cleaning device pollutes the environment, pollutes the stratum and reduces the yield of crude oil are mainly solved. The method is characterized in that: sucker rod belt cleaning device (1) is located elevator (2) upper portion, and sucker rod belt cleaning device (1) bottom connection oil pipe (8), and oil pipe (8) bottom is connected with screen pipe (6), be equipped with inlet tube (10) on sucker rod belt cleaning device (1), be equipped with outlet pipe (20) on the big cross of well head (4), inlet tube (19) are connected after outlet pipe (20) process environmental protection case (9) and superconductive heat carwash (10). The well mouth cleaning device for the workover operation oil pipe and the sucker rod can save resources, avoid stratum pollution and increase the yield of crude oil.

Publication (bulletin) no: CN111779467A, publication (public notice) day: 2020-10-16 relate to a device, in particular to a wellhead oil scraping and cleaning device for sucker rods and oil pipes. Scrape oil cleaner, oil pipe inner chamber including the sucker rod and scrape oil cleaner and oil pipe outer wall and scrape oil cleaner, the sucker rod is scraped oil cleaner and is used for implementing frizing, cleaning work to the sucker rod, and oil pipe inner chamber is scraped oil cleaner and is used for implementing frizing, cleaning work to the oil pipe inner chamber, and oil pipe outer wall is scraped oil cleaner and is used for implementing frizing, cleaning work to the oil pipe outer wall. The provided wellhead oil scraping and cleaning device for the sucker rod and the oil pipe can scrape and clean the sucker rod and the oil pipe at the wellhead respectively when the sucker rod or the oil pipe is started, so that pollution-free operation of conventional well repairing and pump inspection operation is realized.

The technical solutions of the above-disclosed technologies, the technical problems to be solved, and the advantageous effects thereof are all different from the present invention, and no technical inspiration exists in the above-disclosed technical documents for more technical features, technical problems to be solved, and advantageous effects thereof.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the air pressure blowing cleaning device for the construction pipeline of the oil field workover operation, so that the flushing fluid in the connecting pipeline between the vehicle-mounted pump and the wellhead is effectively recovered, the flushing water is prevented from falling to the ground, the environmental pollution is avoided, the operation workers can conveniently operate, and the accidents are prevented. The construction method improves the current situation that construction liquid overflows in the existing well flushing pipeline, and achieves the effect of cleaning operation in the whole process of pump truck construction.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the air pressure blowing cleaning device for the oil field workover operation construction pipeline comprises a wellhead device;

the well-flushing device also comprises a well-flushing pipeline, a three-way joint and a check valve;

the three-way joint is provided with a water inlet, an air inlet and an outlet, wherein the water inlet of the three-way joint is connected with a well washing pipeline, the air inlet of the three-way joint is connected with the outlet of the check valve, and the outlet of the three-way joint is connected with the large four-way joint of the wellhead device.

Further, the inlet of the check valve is connected with a gas source of the workover rig.

Further, the flushing fluid injected into the flushing line into the wellhead cannot flow outwardly from the check valve, but only in the direction of the line connection into the casing in the wellhead.

Further, the well washing and killing device further comprises a well washing and killing pipeline which is communicated with the wellhead device.

Further, the kill-wash line is in communication with an oil line of the wellhead.

Compared with the prior art, the utility model has the following beneficial effects:

after the construction of well flushing and killing and sand washing is finished, pressurized gas is led out from the well repairing equipment, and the gas is blown in through the check valve, so that well flushing liquid in a well flushing pipeline is blown into a vehicle-mounted pump recovery tank, the well flushing liquid in the well flushing pipeline after the well flushing pipeline is detached is prevented from flowing to a well site, the environmental pollution is avoided, no muddy water exists at an operation part of the well site, the well flushing pipeline is not wet and slippery, operation workers are convenient to operate, and accidents such as falling cannot occur.

Drawings

FIG. 1 is a schematic structural view of the air pressure blowing cleaning device for the construction pipeline in the oil field well workover operation of the present invention;

FIG. 2 is a schematic view of a prior art wellhead.

Reference numerals: the well head device 1, a liquid return pipe 2, a three-way joint 3, a well washing pipeline 4 and a check valve 5.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1 to 2, the present embodiment provides an air pressure blowing cleaning device for an oil field workover construction pipeline, which comprises a wellhead device 1, a liquid return pipe 2, a three-way joint 3, a well flushing pipeline 4 and a check valve 5, wherein one end of the well flushing pipeline 4 is communicated with an output port of a vehicle-mounted pump, the other end of the well flushing pipeline 4 is communicated with a side outlet of a large four-way of the wellhead device 1, the liquid return pipe 2 is communicated with the upper part of the wellhead device 1, a well flushing liquid pumped in through the well flushing pipeline 4 can enter a well from the inside of the wellhead device 1, then flow to the bottom of the wellhead device through the outside of an oil pipe hung on the wellhead device 1, then flow into the oil pipe (flow downward from an annular space between the oil pipe and a casing pipe), then flow back out from a liquid return pipe 2 connected to the upper part of the wellhead device 1 (the oil pipe hung on the wellhead device 1 is communicated with the liquid return pipe 2), the three-way joint 3 is installed between the side outlet of the large four-way of the wellhead device 1 and the well flushing pipeline 4, a check valve 5 is installed on the lower port of the three-way joint 3, and a valve ball in the check valve 5 can block a channel, so that flushing fluid injected into the wellhead device 1 from the flushing pipeline 4 cannot flow out of the check valve 5 and only can flow into the wellhead device 1, and fluid injected out of the check valve 5 can flow into the flushing pipeline 4. The structure of the check valve 5 is similar to that of an oil inlet valve of an oil well pump.

When the well-washing and killing sand-washing construction is carried out, the well-washing and killing sand-washing water is the same as the flow of the well-washing and killing sand-washing in the prior art, and the well-washing and killing sand-washing can be normally carried out. The well washing flow in the figure 1 is a reverse well washing process, an oil pipe in a well is positioned in a sleeve, the upper part of the oil pipe is suspended on a wellhead device 1, the oil pipe in the well is not communicated with the sleeve at the wellhead part, well washing water can enter an oil inner pipe only when reaching the bottom of the oil pipe from an annular space between the oil pipe and the sleeve, then flows upwards from the inside of the oil pipe and returns out from a liquid return pipe 2, and therefore well washing is achieved. When gas is blown into the check valve 5, the liquid inlet channel of the well mouth is closed, the valve ball in the check valve 5 leaves the valve seat, the channel is opened, and the gas can be pressed into the well washing pipeline 4. And gas is blown into the check valve 5, and the liquid in the pipeline is replaced by the gas, so that the well washing water in the well washing pipeline 4 can be replaced into a water storage tank on the vehicle-mounted pump truck. After the purging is finished, the three-way joint 3, the well-flushing pipeline 4 and the check valve 5 are detached from the wellhead device 1, and well-flushing water cannot flow onto a well site.

The gas source blown into the check valve 5 is led out from the workover rig without additionally arranging a gas compressor.

The utility model is convenient to implement, avoids environmental pollution, has no muddy water at the operation part of a well site, is not wet and slippery and is convenient for environmental cleaning work.

Example 2:

referring to fig. 1 to fig. 2, the present invention provides a technical solution:

the well flushing device also comprises a well flushing pipeline, a three-way joint and a check valve;

Further, the well-flushing pipeline can not flow out of the check valve to the well-flushing liquid injected into the wellhead device but can only flow into the casing in the wellhead device.

Although fig. 1 to 2 are used in all the above embodiments, it is apparent to those skilled in the art that separate drawings are not provided for illustration as long as parts or structural features missing from the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiment with more components is only the best embodiment, and the embodiment with less components is the basic embodiment, but the basic object of the utility model can also be achieved, so all the modified embodiments are within the protection scope of the utility model.

All parts and components which are not discussed in the present application and the connection mode of all parts and components in the present application belong to the known technology in the technical field. The application is direct and will not be described in detail.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The air pressure blowing cleaning device for the oil field workover operation construction pipeline comprises a wellhead device;

it is characterized by also comprising a well washing pipeline, a three-way joint and a check valve;

2. The pneumatic blow-off cleaning device for the construction pipeline in the oilfield workover operation according to claim 1, wherein the inlet of the check valve is connected with a gas source of a workover rig.

3. The pneumatic blow-out cleaning device for the construction pipeline in the oilfield workover operation according to claim 1 or 2, wherein the flushing fluid injected into the flushing pipeline into the oil-water well cannot flow out of the check valve and only flows into a sleeve in the wellhead device along the flushing pipeline.

4. The pneumatic blow-off sweeping device for the construction pipeline of the oilfield workover operation according to claim 3, further comprising a well flushing pipeline, wherein the well flushing pipeline is communicated with a wellhead device.

5. The pneumatic blow-out sweeping device for the construction pipeline of the oilfield workover operation according to claim 4, wherein the well flushing pipeline is communicated with a tubing of a wellhead device.