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Fracturing pilot production composite wellhead device

A technology of wellhead device and test production, which is applied to valve device of wellbore/well, production fluid, earthwork drilling, etc. handy effect

Inactive Publication Date: 2022-07-29
YANCHENG XUDONG MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the present invention will solve the problems of inconvenient use of the wellhead device and easy occurrence of blowout accidents in the prior art.

Method used

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  • Fracturing pilot production composite wellhead device
  • Fracturing pilot production composite wellhead device
  • Fracturing pilot production composite wellhead device

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Embodiment Construction

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention. , and is not intended to limit the present invention.

[0037] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

[0038] It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orie...

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Abstract

The invention provides a fracturing pilot production composite wellhead device which comprises an oil pipe head, the top end of the oil pipe head is sequentially connected with a plurality of first flat gate valves through upper flanges, fracturing heads are arranged at the top ends of the first flat gate valves, and the top ends of the fracturing heads are connected with small four-way joints through the first flat gate valves. One end of the small four-way joint is connected with an adjustable throttling valve through a second flat gate valve, the other end of the small four-way joint is sequentially connected with a plurality of second flat gate valves, and a plurality of third flat gate valves are arranged on two sides of the tubing head respectively. The invention aims to provide the fracturing pilot production composite wellhead device which is safe, reliable and convenient to use.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a composite wellhead device for fracturing and test production. Background technique [0002] The oil and gas wellhead device is installed at the wellhead to suspend the casing string and the tubing string, and seal the annular space between each layer of casing and the tubing. It can carry out oil and gas operations, and can control the pressure and It can adjust the wellhead flow of oil and gas wells, and can also be used for special wellhead operation equipment such as acid fracturing, water injection, and testing. It has the characteristics of simple structure, small volume, convenient operation and stable performance. Oil and gas wellhead devices are mainly composed of casing heads, tubing heads, crosses, bypass fittings, throttle valves, flat valves, globe valves, pressure gauges, flanges and fasteners. In the field of petroleum, fracturing refers to a met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/02E21B43/26
CPCE21B34/02E21B43/2607
Inventor 祁文楼丁钢凌德华肖传芝王闻闻
Owner YANCHENG XUDONG MASCH CO LTD
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