CN-122014947-A - Leakage-proof sealing protection device for oil well pipeline and use method thereof

CN122014947ACN 122014947 ACN122014947 ACN 122014947ACN-122014947-A

Abstract

The invention relates to the technical field of oil well pipelines, in particular to an oil well pipeline leakage-proof sealing protection device and a use method thereof. The oil well pipeline leakage-proof sealing protection device comprises a first pipeline protection ring, a second pipeline protection ring, a third pipeline protection ring, an inner clamping and adjusting assembly, a pressure relief sealing protection assembly and a slow flow filter plate, wherein the inner clamping and adjusting assembly is arranged on the inner sides of the first pipeline protection ring, the second pipeline protection ring and the third pipeline protection ring and can be used for adapting to the diameters of pipelines to increase the sealing performance, and the pressure relief sealing protection assembly is arranged on the first pipeline protection ring, the second pipeline protection ring and the third pipeline protection ring and can be used for pressure relief early warning protection and improving the sealing protection effect of the whole pipeline.

Inventors

MA SHIQING
XU ZIQIANG
REN XIAORONG
SHI MINGXIA
Chai rui
ZHANG RUI
LIU XIAOJIANG
LI ZHIGUANG
LIAO JIAN
JIANG ZHIGANG
GUO GUIJIAO
XU WENLONG

Assignees

中国石油天然气股份有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (9)

1. The leakage-proof sealing protection device for the oil well pipeline comprises a first pipeline protection ring (1) and is characterized by further comprising a second pipeline protection ring (2), a third pipeline protection ring (3), an inner clamping and adjusting assembly (4), a pressure release sealing protection assembly (5) and a slow flow filter plate (6), wherein the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3) are used for protecting the oil well pipeline connection part to form a circumferentially distributed combined leakage-proof sealing protection, the slow flow filter plate (6) used for reducing the liquid impact pressure to carry out split pressure release is arranged at the circumference center of the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3), the inner side of the first pipeline protection ring (1), the inner clamping and adjusting assembly (4) used for adapting to the pipeline diameter increase sealing performance are arranged at the inner sides of the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3), and the pressure release sealing protection assembly (5) used for pressure release early warning protection are distributed on the first pipeline protection ring (2) and the third pipeline protection ring (3).
2. The leakage-proof sealing protection device for oil well pipelines according to claim 1, wherein the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3) are all arranged in the same structure, a limiting hole (102) for installing an inner clamping adjusting component (4) is formed in the center of the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3), a diversion hole (115) for installing a pressure-proof sealing protection component (5) is formed in the peripheral and near-corner positions of the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3), a first mounting plate (103) and a second mounting plate (104) are respectively arranged at two ends of the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3), an air bag (105) corresponding to the inner clamping adjusting component (4) is arranged on the side wall of the first pipeline protection ring (1), the second pipeline protection ring (2) and the third pipeline protection ring (3), and a rubber protection ring (106) are coated on the outer wall of the first pipeline protection ring (1), limiting grooves (101) corresponding to the first mounting plate (103) and the second mounting plate (104) are linearly formed at two ends of the second pipeline protection ring (2) and the third pipeline protection ring (3).
3. The leakage-proof sealing protection device for the oil well pipeline according to claim 2, wherein the bottom of the first mounting plate (103) is provided with first sealing water-blocking bars (108), four groups of mounting bars (107) are longitudinally arranged on the first mounting plate (103), three groups of engaging blocks (109) for sleeving the mounting bars (107) are transversely arranged on the first mounting plate (103), two groups of first jacks (110) are linearly arranged on the engaging blocks (109), and a butt joint groove is formed between the two groups of mounting bars (107).
4. The leakage-proof sealing protection device for the oil well pipeline according to claim 2, wherein five groups of butt joint blocks (111) are linearly arranged on the second mounting plate (104), mounting grooves (114) are formed between the two groups of butt joint blocks (111), second sealing water blocking strips (113) are arranged at the bottom of the second mounting plate (104), three groups of wedge-in grooves (118) are transversely formed in the second mounting plate (104), and two groups of second jacks (112) are linearly formed in the wedge-in grooves (118).
5. The leakage-proof sealing protection device for oil well pipelines according to claim 2, wherein a slow flow slope (116) is arranged on the inner side of the diversion hole (115) in a circumferential direction, and a first positioning hole (117) is formed on the top of the slow flow slope (116) in a circumferential direction.
6. The leakage-proof sealing protection device for the oil well pipeline according to claim 1, wherein the inner clamping adjusting assembly (4) comprises an inner annular plate (401), a spring column (402), an anti-corrosion coating (403), an inner antenna end (404), a clamping groove (405), a push rod (406), a sheath (407) and a cylinder (408), wherein the inner annular plate (401) is linearly arranged in three groups, the clamping groove (405) for a slow-flow filter plate (6) is formed in the center of the inner annular plate (401), the spring column (402) is connected between the three groups of inner annular plates (401) in a penetrating way, a spring rubber damper is arranged in the spring column (402), a push rod (406) is arranged in the center of the inner annular plate (401), a sheath (407) is sleeved on the push rod (406), the cylinder (408) drives the push rod (406) to drive the inner annular plate (401) to adjust in a lifting mode, the side wall of the inner annular plate (401) is coated with the anti-corrosion coating (403), a pressure sensor is arranged at the inner end of the spring column (402), and the inner end of the pressure sensor is provided with an inner antenna end (404).
7. The leakage-proof sealing protection device for the oil well pipeline according to claim 1, wherein the pressure release sealing protection component (5) comprises a conducting pipe (501), an installation sealing ring (502), a second positioning hole (503), a ball bag (504) and a warning lamp (505), the conducting pipe (501) is sleeved with the installation sealing ring (502), the second positioning hole (503) is annularly formed in the position, close to the edge, of the installation sealing ring (502), the top of the conducting pipe (501) is communicated with the ball bag (504), a rubber damping tensioning sleeve is arranged on the side wall of the ball bag (504), one end of the ball bag (504) is provided with a pressure sensor, and the outer end of the pressure sensor is provided with the warning lamp (505).
8. The leakage-proof sealing protection device for the oil well pipeline according to claim 1, wherein small diversion holes (601) and large diversion holes (602) are formed in the slow flow filter plate (6) in a distributed annular mode, a clamping frame (603) is arranged on the outer end of the slow flow filter plate (6) in an annular mode, and a plurality of layers of overlapped rubber damping interlayers (604) are arranged in the slow flow filter plate (6).
9. An oil well pipeline leakage-proof seal protection device and a use method thereof, comprising the oil well pipeline leakage-proof seal protection device and the use method thereof as claimed in any one of claims 1-8, and characterized by comprising the following steps: S1, observing the joint of two groups of pipelines, processing the joint by using a cleaning tool and a grinding tool, selecting a slow-flow filter plate (6) which can be embedded into the joint according to the diameter of the joint, enabling a part of the end face of the slow-flow filter plate (6) to be embedded into a pipe orifice, increasing and reducing the corresponding slow-flow filter plate (6) according to the pipe orifice distance, and sequentially clamping a first pipeline protection ring (1), a second pipeline protection ring (2) and a third pipeline protection ring (3) in advance through a clamping groove (405) according to the position of a clamping frame (603); s2, observing positions of a first mounting plate (103) and a second mounting plate (104) on a first pipeline protection ring (1), a second pipeline protection ring (2) and a third pipeline protection ring (3) alternately, putting a mounting strip (107) on the first mounting plate (103) and a fitting block (109) into a mounting groove (114) and a fitting groove (118) on the second mounting plate (104) correspondingly, aligning a first jack (110) and a second jack (112) of the mounting groove, and inserting a mounting bolt for positioning, wherein the first sealing water blocking strip (108) and the second sealing water blocking strip (113) are combined in a staggered mode; S3, through an inner clamping and adjusting assembly (4), a cylinder (408) drives a push rod (406) to drive an inner ring plate (401) to lift and adjust, so that the inner ring plate (401) is matched with the outer diameter of a pipeline, a background is fed back through an inner antenna end (404) according to the pressure condition of a pressure sensor, the pressure clamping degree of a first pipeline protection ring (1), a second pipeline protection ring (2) and a third pipeline protection ring (3) is kept in a consistent range, a second positioning hole (503) and a first positioning hole (117) on a mounting sealing ring (502) are matched, and bolt positioning and mounting are performed; S4, along with the impact of liquid flow on the slow flow filter plate (6), through small shunt hole (601) and big shunt hole (602), can strike the reposition of redundant personnel, when meeting oil well pressure unstability, some turbulent flow is strikeed on inner annular plate (401), get into balloon bag (504) through water conservancy diversion hole (115) through conducting pipe (501) and store, because pressure impact spring post (402) and balloon bag (105) form node and face buffering protection, synchronous pressure sensor pressure condition feeds back the backstage through built-in antenna end (404), pressure sensor feedback information carries out early warning scintillation to early warning lamp (505).

Description

Leakage-proof sealing protection device for oil well pipeline and use method thereof Technical Field The invention relates to the technical field of oil well pipelines, in particular to an oil well pipeline leakage-proof sealing protection device and a use method thereof. Background Oil well pipelines are an indispensable important component in the oil exploitation and transportation process, and are mainly used for conveying hydrocarbon substances such as petroleum, natural gas and the like from the bottom of an oil well to surface treatment facilities or storage facilities, including water mixing pipelines, water injection pipelines, water return pipelines, heat tracing pipelines and the like, and the pipelines bear specific tasks in the oil field production process, such as increasing the fluidity of crude oil, injecting water for pressurization, recycling water, and the like, and in order to ensure the safe operation of the oil well pipelines and prolong the service life of the oil well pipelines, regular maintenance and overhaul management is needed The leakage of the oil well pipeline is a serious problem, and can be caused by various reasons, and has great influence on the environment and operation, the pipeline can be corroded, the pipeline leakage can be caused by long-term accumulation, the existing oil well pipeline sealing and protecting device is generally provided with a sleeve joint structure and a sealing ring for sealing and protecting in the protection process, wherein the properties and the flowing state of substances such as crude oil, associated gas, formation water, injected water and the like are improved, and the sealing rubber ring is broken and leaked due to overlarge internal pressure, so that the sealing performance is reduced, and the overall safety protection effect is reduced. Therefore, aiming at the conventional oil well pipeline sealing protection device, a sleeve joint structure and a sealing ring are generally arranged for sealing protection, wherein the properties and flowing state of substances such as crude oil, associated gas, formation water, injected water and the like are that the sealing rubber ring is broken and leaked due to overlarge internal pressure, so that the sealing performance is reduced, the overall safety protection effect is reduced, and the oil well pipeline leakage-proof sealing protection device and the use method thereof can be designed so as to solve the problems raised in the prior art. Disclosure of Invention In order to overcome the existing oil well pipeline sealing protection device, a sleeve joint structure and a sealing ring are generally arranged for sealing protection, wherein the properties and flowing state of substances such as crude oil, associated gas, formation water, injected water and the like are adopted, and the sealing rubber ring is broken and leaked due to overlarge internal pressure, so that the sealing performance is reduced, and the problem of the overall safety protection effect is reduced. The leakage-proof sealing protection device for the oil well pipeline comprises a first pipeline protection ring, a second pipeline protection ring, a third pipeline protection ring, an inner clamping and adjusting assembly, a pressure release sealing protection assembly and a slow flow filter plate, wherein the first pipeline protection ring, the second pipeline protection ring and the third pipeline protection ring are used for protecting the joint of the oil well pipeline to form annular distribution combination leakage-proof sealing protection, the slow flow filter plate used for reducing the liquid impact pressure to carry out diversion pressure release is arranged at the circumferential centers of the first pipeline protection ring, the second pipeline protection ring and the third pipeline protection ring, the inner side of each of the first pipeline protection ring, the inner side of each of the second pipeline protection ring and the inner side of each of the third pipeline protection ring are provided with the inner clamping and adjusting assembly used for adapting to the pipeline diameter to increase the sealing performance, and the pressure release sealing protection assemblies used for pressure release early warning protection are distributed on each of the first pipeline protection ring, the second pipeline protection ring and the third pipeline protection ring. Preferably, utilize the slow flow filter plate, be located first pipeline protection ring, second pipeline protection ring and third pipeline protection ring circumference center setting, can be used for reducing liquid impact pressure and shunt the pressure release, through interior centre gripping adjusting part, be located first pipeline protection ring, second pipeline protection ring and third pipeline protection ring inboard setting, can be used for adapting pipeline diameter to increase the leakproofness, through pressure release seal protection part, be l