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An adjustable throttling manifold

A choke manifold and adjustable technology, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc., can solve the problem that the choke aperture of the fixed nozzle cannot be adjusted in real time, the anti-erosion nipple is damaged by erosion, and the fixed Difficult to replace the oil nozzle and other problems, to achieve a wide range of aperture adjustment, prolong the service life, improve the effect of throttling and pressure reduction

Active Publication Date: 2019-06-18
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

[0003] In order to solve the difficulty in replacing the fixed nozzle in the "single fixed nozzle + needle valve" choke manifold in the prior art during the spraying and drainage process after fracturing, the throttle aperture of the fixed nozzle cannot be adjusted in real time, and the fixed nozzle is damaged by erosion. Needle valve damage, inaccurate pressure drop regulation, erosion-proof sub-joint erosion damage and other problems, the purpose of this invention is to propose an adjustable throttling manifold, the throttling manifold in the process of use, the manual needle valve can Open to the maximum opening, only use the adjustable throttling fixed nozzle for throttling and spraying, because the adjustable throttling fixed nozzle can realize real-time two-way adjustment, no need to replace the nozzle, which reduces the labor intensity of the on-site operators, and is equipped with corresponding The erosion-resistant reducing nipple reduces the fluid velocity flowing out of the adjustable throttling fixed nozzle, and has a certain anti-erosion effect

Method used

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Embodiment 1

[0022] Such as figure 1 As shown, the present invention proposes an adjustable choke manifold, which is mainly used in blowout and liquid discharge operations after fracturing of oil and gas wells.

[0023] The choke manifold includes a pipeline cross 2, and the pipeline cross 2 has a manifold sleeve insertion port, and the manifold sleeve insertion opening is connected to the wellhead casing gate valve through the first manual flat gate valve, and the pipeline One of the nozzles of the four-way 2 is sequentially connected to the second manual flat gate valve 3, the first adjustable throttling fixed nozzle 4, the first reducing nipple 5, the third manual flat gate valve 6, and the first pipeline through the pipeline. Five-way 7, one nozzle of the first pipeline five-way 7 is connected to the first manifold outlet through the fourth manual flat gate valve 8, and the other nozzle of the first five-way 7 is connected to the sixth manual flat gate valve 10 and A pipeline tee 11, ...

Embodiment 2

[0035] On the basis of Example 1, such as figure 2 As shown, the first adjustable throttling fixed nozzle and the second adjustable throttle fixed nozzle 15 have the same structure, which include a flow regulating handle 22, a connecting rod 23, an aperture dial 24, a flow regulating transmission shaft 25, and a flow control Device 26, oil nozzle seat 27, valve seat 28, a longitudinal passage 29 is provided in the lower part of the valve seat 28, a transverse passage 30 communicating with the longitudinal passage 29 is provided on the side wall of the valve seat 28, and the interior of the longitudinal passage 29 is installed There is an oil nozzle seat 27, and the oil nozzle seat 27 is provided with a scale value. The lower part of the aperture dial 24 is inserted into the longitudinal channel 29 inside the valve seat 28, and the upper end surface of the aperture dial 24 is provided with a scale corresponding to the scale on the oil nozzle seat 27. , and each scale on the up...

Embodiment 3

[0041] On the basis of Embodiment 2, the flow controller 26 and the nozzle seat 27 are made of erosion-resistant cemented carbide tungsten carbide YG8 material, and the wear-resistant material makes the fixed nozzle have very high erosion resistance.

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Abstract

The invention provides an adjustable throttling manifold. The adjustable throttling manifold comprises two adjustable throttling fixed oil nozzles, a manual needle type throttling valve , eleven manual flat gate valves, three erosion-resistant reduction short pieces, a pipeline tee joint, a pipeline cross joint, two pipeline five-way connectors and a manifold pipeline. The throttling manifold is of a structure with two inlets and two outlets, one side is controlled through the manual needle type throttling valve and the second adjustable throttling fixed oil nozzle, the other side is controlled through the first adjustable throttling fixed oil nozzle, and direct discharging is adopted for the middle. A certain throttling hole diameter is determined through the adjustable throttling fixed oil nozzles, two paths for throttling are controlled, and direct discharging is conducted through one path, so that accurate control over pressure of an oil pipe and a sleeve in the blowout drainage after fracture is achieved, the situation that the pipeline bursts due to too high pressure or sand comes out of a formation due to too low pressure is avoided, and the fixed oil nozzles in the throttling manifold is prevented from being eroded.

Description

technical field [0001] The invention belongs to the technical field of throttling technology on the surface of oil and gas wells, and in particular relates to an adjustable throttling manifold. Background technique [0002] At present, the "single fixed nozzle + needle valve" choke manifold used in oil and gas well drainage has problems such as difficult replacement of the fixed nozzle, real-time adjustment of nozzle aperture, poor erosion resistance of the nozzle, and easy damage of the adjustable needle valve. Moreover, in the process of spraying and discharging liquid, due to the small aperture of the throttle nozzle, it is easy to cause erosion damage to the nozzle, erosion damage to the downstream anti-erosion nipple, etc., which increases the frequency of replacement of the nipple, adjustable needle valve, and nipple. It increases the input cost, reduces the service life of the choke manifold, seriously restricts the efficiency and progress of oil and gas on-site blowo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/12
CPCE21B43/12
Inventor 仝少凯王祖文包小红杨小平岳艳芳温亚魁陈建林魏晓龙
Owner BC P INC CHINA NAT PETROLEUM CORP