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A high-pressure filter throttling manifold and its filter throttling method

A technology of choke manifold and high pressure, which is applied in earthwork drilling, wellbore/well components, sealing/package, etc. Problems such as flow pressure drop, temperature drop, sudden change, etc., achieve the effects of improving filtration throttling efficiency, saving costs, and improving service life

Active Publication Date: 2019-02-19
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the simultaneity problem of the size and content fine filtration of mechanical impurities in oil and gas well drilling and grinding fluid and the precise control of wellbore drilling and grinding fluid circulation pressure, so as to simplify the drilling and grinding surface process, continuously cycle drilling and grinding, and reduce the risk of surface process Purpose: At the same time, solve the acute problems such as throttling erosion damage of the fixed oil nozzle in the existing throttling manifold, difficulty in replacement, sudden change of throttling pressure drop and temperature drop, and erosion damage of the anti-erosion nipple, so as to improve the use of high pressure filter throttling manifold Life and filter throttling effect

Method used

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  • A high-pressure filter throttling manifold and its filter throttling method

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Experimental program
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Effect test

Embodiment 1

[0034] This embodiment provides a high-pressure filter throttling manifold, such as figure 1 As shown, including the pipeline five-way one 20 as the manifold inlet and the pipeline five-way two 10 as the manifold outlet, the pipeline five-way one 20 and the pipeline five-way two 10 are connected through three passages respectively, wherein , one channel is a direct discharge channel, one channel is connected in series with a fixed throttle valve and a high-pressure filter nipple, and the last channel is connected in series with a manual needle type throttle valve, a fixed throttle valve and a high-pressure filter nipple.

[0035] One of the nozzles of the pipeline five-way one 20 is installed with a manual flat gate valve one 1 as a manifold inlet; one of the nozzles of the five pipeline two-way two 10 is installed with a manual flat gate valve two 11 as a manifold outlet;

[0036] One of the nozzles of the pipeline five-way one 20 is connected to a pipeline tee through a pipe...

Embodiment 2

[0042] combine figure 1 As shown, in this embodiment, the high-pressure filter nipple includes a high-pressure filter nipple 1 and a high-pressure filter nipple 2 18; the fixed throttle valve includes a fixed throttle valve 1 and a fixed throttle Flow valve two 14; three passages in the above-mentioned two embodiments are specifically respectively:

[0043] The first channel is composed of a nozzle of the pipeline five-way 120, manual flat gate valve 32, pipeline tee 3, high-pressure filter joint 14, fixed throttle valve 15, manual flat gate valve 48, pipe One nozzle of Luwutong 210 is connected in sequence;

[0044] The second passage is composed of a nozzle of the pipeline five-way 120, a manual flat gate valve five-9, and a nozzle of the pipeline five-way two 10 connected in sequence;

[0045] The third channel consists of a nozzle of the pipeline five-way 120, manual flat gate valve six 19, high-pressure filter joint two 18, manual needle type throttle valve 17, fixed th...

Embodiment 3

[0048] In order to realize the structural filtering function in the two embodiments mentioned above, this embodiment will be further described in detail. In this embodiment, the high-pressure filter nipple 1 and the high-pressure filter nipple 2 18 are equipped with wire cutting technology. Erosion resistant carbide filter cartridges with different slot sizes.

[0049] The fixed throttle valve-5 is equipped with an erosion-resistant variable-diameter nozzle-6 inside, and the downstream of the fixed throttle valve-5 is installed with an erosion-resistant variable-diameter nipple-7, and the fixed throttle valve-5 passes through the erosion-resistant Variable diameter nipple 1 7, manual flat gate valve 4 8 are connected with a nozzle of pipeline 5-way 2 10; fixed throttle valve 2 14 is equipped with erosion-resistant variable diameter nozzle 2 15, fixed throttle valve 2 Downstream of 14, there is an erosion-resistant variable-diameter nipple 2 13, and the fixed throttle valve 2 1...

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Abstract

The invention relates to a high-pressure filtering throttle manifold and a filtering throttling method thereof. The manifold is composed of two high-pressure filtering nipples, two fixed type throttle valves, a hand-operated needle type throttle valve, seven hand-operated flat gate valves, three erosion-resistant reducing nipples, a pipeline tee joint, two pipeline five-way joints and a manifold pipeline. The filtering manifold is of a one-inlet and one-outlet structure. One side of the manifold is controlled through the fixed type throttle valves and the high-pressure filtering nipples, the other side of the manifold is controlled through the hand-operated needle type throttle valve, the fixed type throttle valves and the high-pressure filtering nipples, and direct discharge is adopted for the middle. The two high-pressure filtering nipples and the two fixed type throttle valves integrate the fine filtering function and the precise pressure control function, and it is ensured that the nipples and oil nozzles are convenient to replace. The corrosion-resistant performance is good, cost of easily-damaged parts is saved, the continuous drilling and milling circulation effect is good, practicability is high, the service life of the manifold is prolonged, the filtering throttling effect of the manifold is improved, and the high-pressure filtering throttle manifold is suitable for being applied in the ground flow of oil-gas well drilling and milling cyclic operation.

Description

technical field [0001] The invention specifically relates to a high-pressure filter throttling manifold and a filter throttling method thereof, which are mainly applicable to the surface process of oil and gas well drilling and grinding circulation operations. Background technique [0002] During the drilling and grinding process of oil and gas wells, there are mechanical impurities such as bridge plug debris, slip fragments, and gravel in the drilling and grinding fluid returned from the annulus of the wellbore oil casing. Fine filtration treatment. At the same time, in order to control the wellbore casing pressure and prevent wellbore deformation, it is necessary to precisely control the drilling and grinding fluid circulation wellbore casing pressure. [0003] According to field surveys, during the drilling and grinding process of oil and gas wells, the drilling and grinding fluid discharged from the annulus of the wellbore first passes through the debris trap, and the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/06E21B21/08E21B34/02
CPCE21B21/065E21B21/08E21B34/02
Inventor 仝少凯王祖文白明伟杨小平岳艳芳樊炜温亚魁张冕徐迎新任荣利
Owner BC P INC CHINA NAT PETROLEUM CORP