Valve-type oil tube floating valve device
A float valve device and valve-type technology, which is applied in the direction of wellbore/well valve device, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of single device style, cumbersome process, expensive cost, etc., and achieve convenient use , Simple operation, and the effect of preventing the loss of drilling fluid
Active Publication Date: 2012-07-25
CNPC XIBU DRILLING ENG
View PDF7 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The present invention provides a valve-type oil pipe float valve device, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the existing device has a single style, complex structure, Expensive and cumbersome problems
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.
[0018] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout of the drawings in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is It is determined according to the layout direction of the attached drawings.
[0019] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:
[0020] As shown in Figure 1, the valve-type oil pipe float valve device includes a body 1, a locking device and a valve-type valve core device that can be opened under a limited pressure; there is an internal or external thread on the left part of the body 1, and a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to the technical field of unbalanced well completion, in particular to a valve-type oil tube floating valve device, which comprises a body, a locking device and a valve-type spool device. The valve-type spool device can be opened under limited pressure, an internal thread or an external thread is arranged on the left of the body, an external thread or an internal thread is arranged on the right of the body, a boss is arranged in the middle of the inner wall of the body, the locking device is fixedly mounted on the inner wall of the body on the right of the boss, the left end of the valve-type spool device is abutted to the right end surface of the boss, and the right end of the valve-type spool device is abutted to the left end of the locking device. The valve-type oil tube floating valve device is reasonable and compact in structure and convenient in use, channeling, easy blowout and loss of drilling fluid of high-pressure oil and gas flow during unbalanced well completion tubing operation are prevented by means of using the boss, a valve seat, a valve, a torsion spring and a locking spring sheet in a matched manner, the valve-type oil tube floating valve device has the advantages of simplicity in operation, safety and reliability, production cost is reduced, and production efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of underbalanced well completion, and relates to a valve type tubing float valve device. Background technique [0002] When performing underbalanced completion downhole tubing operations, the pressure of the bottom hole fluid column is lower than the pressure of the formation pore fluid, the formation fluid enters the wellbore in a controlled manner, and the oil and gas return from the tubing or the annular space of the oil casing. The injector controls the upward return of the fluid. If no blowout prevention measures are taken in the tubing, the normal construction will be affected at least, and well control accidents will occur at the worst. In addition, the snubbing string technology in workover operations is developing rapidly, and various oil fields prefer the tubing under pressure technology. However, the tubing plugs used in the snubbing tubing currently have a single style, complex structure, expensi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): E21B34/08
Inventor 张彦龙田军曾权先孙新江
Owner CNPC XIBU DRILLING ENG