Integrated process pipe column for partial pressure commingling production

By designing an integrated process tubing, utilizing the piston connection between the upper and lower pump barrels and a packer, the problems of complex construction and inter-layer interference in existing technologies have been solved, enabling efficient exploitation and increased production of multiple oil layers.

CN223739384UActive Publication Date: 2025-12-30YANCHANG PETROLEUM INT EXPLORATION & DEV ENG +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520192781.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-07
Publication Date
2025-12-30
Estimated Expiration
2035-02-07

AI Technical Summary

Technical Problem

Existing stratified oil production technology is complex to implement under a single pressure system, requires multiple downhole tools, cannot completely solve inter-strata interference, and has a relatively small increase in production.

Method used

An integrated process tubing is used, including a steel sleeve, oil production components and sealing components. By utilizing the piston connection and oil drain hole design in the upper and lower pump barrels, combined with packers and one-way float valves, the oil is transported in stages and pressure is isolated, avoiding inter-layer interference.

Benefits of technology

It simplifies the construction process, enables simultaneous extraction of oil from multiple oil layers, reduces inter-layer interference, and increases production.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223739384U_ABST
    Figure CN223739384U_ABST
Patent Text Reader

Abstract

The utility model provides an integrated process pipe column for partial pressure commingling production, which belongs to the technical field of oil production and comprises a steel sleeve, an oil production component and a sealing component. An upper connector is installed on the top of the steel sleeve, and an oil pipe is inserted into the steel sleeve. An upper pump cylinder and a lower pump cylinder are arranged in a steel sleeve, an upper pump plunger and a lower pump plunger are connected into the upper pump cylinder and the lower pump cylinder through pistons respectively, the bottom of the upper pump plunger is connected with an upper sleeve ring, the bottom of the lower pump plunger is connected with a lower sleeve ring, and oil discharge holes are formed in the middle of the upper sleeve ring and the middle of the lower sleeve ring. An upper traveling valve and a lower traveling valve are correspondingly arranged in the two oil discharge holes respectively, when the upper pump plunger and the lower pump plunger operate synchronously, oil liquid enters the upper pump cylinder and the lower pump cylinder respectively, the oil liquid pushes the upper traveling valve and the lower traveling valve to be opened or closed at the same time during reciprocating motion, and the oil liquid is discharged through the oil discharge holes. The upper pump cylinder and the lower pump cylinder are connected through an oil pipe, so that oil liquid can be conveyed outwards step by step conveniently, and commingling production operation is achieved.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil exploitation, specifically to an integrated process pipe column for pressure division and combined production. BACKGROUND

[0002] Petroleum is a fluid mineral buried in the ground. Initially, people called the oil-like liquid mineral produced in nature petroleum, called natural gas for combustible gas, and called asphalt for solid combustible oil mineral. With the in-depth study of these minerals, it is realized that they are all hydrocarbon compounds in composition and are related in origin, so they are collectively referred to as petroleum. Oil exploitation refers to the behavior of excavating and extracting oil in places where oil is stored. In the process of oil exploitation, oil and gas flow from the reservoir to the bottom of the well, and then rise to the wellhead. In oilfield development, multi-layer development wells are affected by reservoir sedimentary characteristics, original physical properties and water injection development, and the interlayer contradiction is more prominent during combined production. The existing separate layer oil production process is carried out under a set of pressure systems, and ordinary oil pumps need to be matched with many downhole tools, such as oil pumps, constant pressure production matching devices, sealers, release joints, packers and single valves. The construction is complex, cannot completely solve the interlayer interference, and has a small increase in production. SUMMARY

[0003] The utility model aims at providing a kind of integrated process pipe column for pressure division and combined production, to solve the problem that the existing separate layer oil production process is carried out under a set of pressure systems, and ordinary oil pumps need to be matched with many downhole tools, such as oil pumps, constant pressure production matching devices, sealers, release joints, packers and single valves, the construction is complex, cannot completely solve the interlayer interference, and has a small increase in production.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: an integrated process pipe column for pressure division and combined production, comprising a steel sleeve, an oil production assembly and a sealing assembly;

[0005] Wherein: the top of the steel sleeve is provided with an upper joint, and the inside of the steel sleeve is inserted with an oil pipe;

[0006] The oil production assembly comprises an upper pump cylinder arranged in the inside of the steel sleeve, the inside of the upper pump cylinder is connected with an upper pump plunger through a piston, the bottom of the upper pump plunger is connected with an upper sleeve ring, the middle part of the upper sleeve ring is provided with an oil discharge hole, the inside of the oil discharge hole is provided with an upper movable valve, the upper pump cylinder is connected with the top of the oil pipe, the bottom of the oil pipe is connected with a lower pump cylinder, the inside of the lower pump cylinder is connected with a lower pump plunger through a piston, the bottom of the lower pump plunger is connected with a lower sleeve ring, the middle part of the lower sleeve ring is also provided with an oil discharge hole, and the inside of the oil discharge hole of the lower sleeve ring is provided with a lower movable valve;

[0007] The sealing assembly includes a support column inserted through the bottom of the steel sleeve, a plurality of sealing rings being fitted in the middle of the support column, an upper conical sealing sleeve being installed at the top of the support column, and a lower conical sealing sleeve being installed at the bottom of the support column.

[0008] As a preferred embodiment of this utility model: a packer is sleeved in the middle of the oil pipe, and the packer is disposed between the upper pump barrel and the lower pump barrel.

[0009] As a preferred embodiment of the present invention: a slide valve seat is installed on the top of the packer, and a one-way float valve is installed inside the slide valve seat.

[0010] As a preferred embodiment of this utility model: the steel sleeve and the upper pump barrel are respectively provided with upper oil inlet holes, and the steel sleeve and the lower pump barrel are respectively provided with lower oil inlet holes.

[0011] As a preferred embodiment of this utility model: the surface of the steel sleeve is further provided with a cleaning hole, and the cleaning hole has a built-in one-way valve.

[0012] As a preferred embodiment of this utility model: the inner wall of the steel sleeve is provided with a fixing ring, and the upper pump cylinder and the lower pump cylinder are connected to the fixing ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) An upper pump cylinder and a lower pump cylinder are provided inside the steel sleeve. The upper pump cylinder and the lower pump cylinder are respectively connected to the piston of the upper pump plunger and the lower pump plunger. The bottom of the upper pump plunger is connected to the upper sleeve ring, and the bottom of the lower pump plunger is connected to the lower sleeve ring. The upper sleeve ring and the lower sleeve ring are provided with oil drain holes in the middle. The two oil drain holes are respectively provided with the upstream moving valve and the downstream moving valve. When the upper pump plunger and the lower pump plunger run synchronously, the oil enters the upper pump cylinder and the lower pump cylinder respectively. When reciprocating, the oil pushes the upstream moving valve and the downstream moving valve to open or close at the same time, so that the oil is discharged through the oil drain hole. The upper pump cylinder and the lower pump cylinder are connected by oil pipes, which facilitates the step-by-step delivery of oil to the outside to realize the joint mining operation.

[0015] (2) A packer is installed in the middle of the oil pipe. The packer is set between the upper pump barrel and the lower pump barrel so that when oil is extracted from different depths of multiple oil layers at the same time, pressure is divided and the oil does not interfere with each other. A slide valve seat is installed on the top of the packer. A one-way float valve is installed inside the slide valve seat. When the oil is transported upward, the oil pushes open the one-way float valve so that the oil at the bottom can be transported upward and backflow is avoided. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2This is a schematic diagram of the oil production component structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the sealing component structure of this utility model;

[0019] Figure 4 This is a schematic diagram showing the location and structure of the oil inlet hole in this utility model.

[0020] In the diagram: 1. Steel sleeve; 2. Upper connector; 3. Oil pipe;

[0021] 4. Oil production assembly; 41. Upper pump barrel; 42. Upper pump plunger; 43. Upper collar; 44. Drain hole; 45. Upstream valve; 46. Lower pump barrel; 47. Lower pump plunger; 48. Lower collar; 49. Downstream valve;

[0022] 5. Sealing assembly; 51. Support column; 52. Sealing ring; 53. Upper conical sealing sleeve; 54. Lower conical sealing sleeve; 6. Packer; 7. Spool valve seat; 8. One-way float valve; 9. Upper oil inlet;

[0023] 10. Lower oil inlet hole; 11. Cleaning hole; 12. Retaining ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Please see Figures 1-4 An integrated process tubing string for pressure-dividing and combined oil production includes: a steel sleeve 1, an oil production assembly 4, and a sealing assembly 5; an upper connector 2 is installed on the top of the steel sleeve 1, and an oil pipe 3 is inserted inside the steel sleeve 1.

[0026] Please see Figure 1 , Figure 2 The oil production assembly 4 includes an upper pump cylinder 41 disposed inside the steel sleeve 1. An upper pump plunger 42 is connected to the piston inside the upper pump cylinder 41. An upper sleeve 43 is connected to the bottom of the upper pump plunger 42. An oil drain hole 44 is opened in the middle of the upper sleeve 43. An upstream valve 45 is provided inside the oil drain hole 44. The upper pump cylinder 41 is connected to the top of the oil pipe 3. A lower pump cylinder 46 is connected to the bottom of the oil pipe 3. A lower pump plunger 47 is connected to the piston inside the lower pump cylinder 46. A lower sleeve 48 is connected to the bottom of the lower pump plunger 47. An oil drain hole 44 is also opened in the middle of the lower sleeve 48. A downstream valve 49 is provided inside the oil drain hole 44 of the lower sleeve 48.

[0027] In practical use: Inside the steel sleeve 1, there is an upper pump cylinder 41 and a lower pump cylinder 46. Inside the upper pump cylinder 41 and the lower pump cylinder 46, there are pistons connecting the upper pump plunger 42 and the lower pump plunger 47, respectively. The bottom of the upper pump plunger 42 is connected to the upper collar 43, and the bottom of the lower pump plunger 47 is connected to the lower collar 48. The upper collar 43 and the lower collar 48 are provided with oil drain holes 44 in the middle. The two oil drain holes 44 are respectively provided with an upstream moving valve 45 and a downstream moving valve 49. When the upper pump plunger 42 and the lower pump plunger 47 run synchronously, the oil enters the upper pump cylinder 41 and the lower pump cylinder 46, respectively. During the reciprocating motion, the oil pushes the upstream moving valve 45 and the downstream moving valve 49 to open or close simultaneously, so that the oil is discharged through the oil drain holes 44. The upper pump cylinder 41 and the lower pump cylinder 46 are connected by the oil pipe 3, which facilitates the step-by-step delivery of oil to the outside to realize the combined mining operation.

[0028] Please see Figure 1 , Figure 3 The sealing assembly 5 includes a support column 51 inserted into the bottom of the steel sleeve 1. Multiple sealing rings 52 are sleeved in the middle of the support column 51. An upper conical sealing sleeve 53 is installed on the top of the support column 51, and a lower conical sealing sleeve 54 is installed on the bottom of the support column 51.

[0029] In practical use: a support column 51 is inserted through the bottom of the steel sleeve 1, and multiple sealing rings 52 are fitted in the middle of the support column 51. The sealing rings 52 fit and seal with the inside of the steel sleeve 1 to prevent oil leakage. The upper conical sealing sleeve 53 and the lower conical sealing sleeve 54 installed at the top and bottom of the support column 51 respectively ensure that the support column 51 is fixed in the steel sleeve 1.

[0030] Please see Figure 2 A packer 6 is fitted in the middle of the oil pipe 3. The packer 6 is located between the upper pump cylinder 41 and the lower pump cylinder 46. A slide valve seat 7 is installed on the top of the packer 6. A one-way float valve 8 is installed inside the slide valve seat 7.

[0031] In practical use: A packer 6 is installed in the middle of the oil pipe 3. The packer 6 is located between the upper pump cylinder 41 and the lower pump cylinder 46, so that when oil from different depths in multiple oil layers is extracted at the same time, pressure is divided and the oil is isolated so that it does not interfere with each other. A slide valve seat 7 is installed on the top of the packer 6. A one-way float valve 8 is installed inside the slide valve seat 7. When the oil is transported upward, the oil pushes open the one-way float valve 8, so that the oil at the bottom can be transported upward and backflow is avoided.

[0032] Please see Figure 2 , Figure 4 The steel sleeve 1 and the upper pump barrel 41 are respectively provided with upper oil inlet holes 9, and the steel sleeve 1 and the lower pump barrel 46 are respectively provided with lower oil inlet holes 10.

[0033] In practical use: the steel sleeve 1 and the upper pump cylinder 41 are respectively provided with upper oil inlet holes 9 to facilitate the oil to enter the interior of the upper pump cylinder 41, and the steel sleeve 1 and the lower pump cylinder 46 are provided with lower oil inlet holes 10 to allow the oil to enter the lower pump cylinder 46, so as to realize the oil inlet pumping.

[0034] Please see Figure 1 The surface of the steel sleeve 1 is also provided with a cleaning hole 11, and the cleaning hole 11 has a built-in one-way valve.

[0035] In practical use: The surface of the steel sleeve 1 is provided with a cleaning hole 11. During cleaning, the cleaning fluid enters through the cleaning hole 11 to clean the steel sleeve 1 and the oil pipe 3. The one-way valve inside the cleaning hole 11 prevents the cleaning fluid from flowing back or leaking out.

[0036] Please see Figure 2 The inner wall of the steel sleeve 1 is provided with a fixing ring 12, and the upper pump cylinder 41 and the lower pump cylinder 46 are connected to the fixing ring 12.

[0037] In practical use: The inner wall of the steel sleeve 1 is provided with a fixing ring 12, and the upper pump cylinder 41 and the lower pump cylinder 46 are fixed in the steel sleeve 1 by the fixing ring 12.

[0038] When the upper pump plunger 42 and the lower pump plunger 47 run synchronously, the oil enters the upper pump cylinder 41 and the lower pump cylinder 46 respectively. During the reciprocating motion, the oil pushes the upstream moving valve 45 and the downstream moving valve 49 to open or close simultaneously, so that the oil is discharged through the oil drain hole 44. The upper pump cylinder 41 and the lower pump cylinder 46 are connected by the oil pipe 3, which facilitates the step-by-step delivery of oil to the outside to realize the joint mining operation. The packer 6 is set between the upper pump cylinder 41 and the lower pump cylinder 46, so that when oil from different depths in multiple oil layers is mined at the same time, pressure is divided and isolated so that they do not interfere with each other. The top of the packer 6 is equipped with a slide valve seat 7, and a one-way float valve 8 is installed inside the slide valve seat 7. When the oil is delivered upward, the oil pushes open the one-way float valve 8, so that the oil at the bottom can be delivered upward and backflow is avoided.

[0039] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated process tubing string for combined pressure-dividing and combined mining, characterized in that, Include: Steel sleeve (1), the top of the steel sleeve (1) is provided with an upper joint (2), and the inside of the steel sleeve (1) is inserted with a tubing (3); An oil production assembly (4) is arranged in the steel sleeve (1), the inside of the upper pump cylinder (41) is connected with an upper pump plunger (42), the bottom of the upper pump plunger (42) is connected with an upper sleeve ring (43), the middle part of the upper sleeve ring (43) is provided with an oil discharge hole (44), the inside of the oil discharge hole (44) is provided with an upper movable valve (45), the upper pump cylinder (41) is connected with the top of the tubing (3), the bottom of the tubing (3) is connected with a lower pump cylinder (46), the inside of the lower pump cylinder (46) is connected with a lower pump plunger (47), the bottom of the lower pump plunger (47) is connected with a lower sleeve ring (48), the middle part of the lower sleeve ring (48) is also provided with an oil discharge hole (44), and the oil discharge hole (44) of the lower sleeve ring (48) is provided with a lower movable valve (49); A sealing assembly (5) comprises a support column (51) inserted in the bottom of the steel sleeve (1), a plurality of sealing rings (52) are arranged in the middle part of the support column (51), an upper conical sealing sleeve (53) is arranged at the top of the support column (51), and a lower conical sealing sleeve (54) is arranged at the bottom of the support column (51).

2. The integrated process column for combined pressure swing adsorption according to claim 1, wherein: The middle part of the tubing (3) is provided with a packer (6), and the packer (6) is arranged between the upper pump cylinder (41) and the lower pump cylinder (46).

3. An integrated process column for split-pool synthesis according to claim 2, wherein: The top of the packer (6) is provided with a slide valve seat (7), and the inside of the slide valve seat (7) is provided with a one-way floating ball valve (8).

4. The integrated process column for combined pressure swing adsorption according to claim 1, wherein: The surface of the steel sleeve (1) and the upper pump cylinder (41) is correspondingly provided with an upper oil inlet hole (9), and the surface of the steel sleeve (1) and the lower pump cylinder (46) is correspondingly provided with a lower oil inlet hole (10).

5. The integrated process column for combined pressure swing adsorption according to claim 1, wherein: The surface of the steel sleeve (1) is also provided with a cleaning hole (11), and the cleaning hole (11) is provided with a one-way valve.

6. The integrated process column for combined pressure swing adsorption according to claim 1, wherein: The inner wall of the steel sleeve (1) is provided with a fixing ring (12), and the upper pump cylinder (41) and the lower pump cylinder (46) are connected with the fixing ring (12).