Underwater mud layer recyclable multi-stage telescopic fixing leg
A technology of fixed legs and telescopic legs, which is applied in the direction of wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of poor anti-vibration performance, poor stability, oil leakage, etc., and achieve enhanced stability and anti-corrosion Vibration ability, easy replacement of inner cylinder and middle cylinder, convenient installation and recycling
Active Publication Date: 2015-08-12
MEIZUAN ENERGY TECH SHANGHAI
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Problems solved by technology
At present, when the traditional subsea tree guide support structure is applied to the oil and gas production process of the subsea tree, the stability of the subsea tree structure is poor. The anti-vibration performance is poor, and it is easy to cause the sealing performance of the connection part of the subsea tree to fail, or even oil leakage, and affect the service life of the subsea tree
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[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0033] figure 1 It is a top view of the underwater mud layer recoverable multi-stage telescopic fixed leg according to an embodiment of the present invention. figure 2 yes figure 1 The side view of the underwater mud layer recoverable multi-stage telescopic fixed legs is shown. image 3 yes figure 1 Shown is a partial schematic diagram of the underwater mud layer recoverable multi-stage telescopic fixed legs. Figure 4 yes image 3 A-A sectional view of the shown underwater mud layer recoverable multi-stage telescopic fixed legs. Figure 5 yes Figure 4 The B-B sectional view of the shown underwater mud layer recoverable multi-stage telescopic fixed leg. Figure 6 yes Figure 4 The C-C sectional view of the underwater mud...
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The invention provides an underwater mud layer recyclable multi-stage telescopic fixing leg comprising a guide frame, a plurality of telescopic legs, a plurality of support assemblies, and stop pins. The guide frame is equipped with a plurality of vertical guide columns. Each telescopic leg is fixedly installed to the side of the corresponding guide column of the guide frame; the telescopic legs extend slantingly downward; and each telescopic leg includes an outer cylinder, a middle cylinder and an inner cylinder, wherein the middle cylinder and the inner cylinder can axially move relative to the outer cylinder, the middle cylinder is provided with a plurality of guide slots, a telescopic rope is placed at the bottom of the inner cylinder, the inner cylinder and the middle cylinder can be sequentially retracted into the outer cylinder and stacked by pulling the telescopic rope, and the bottom of the inner cylinder is equipped with a fixing pin. Each support assembly includes two support cylinders and a connecting support cylinder of which one end is fixed between the two support cylinders, wherein the support cylinders are fixed between the corresponding guide column and the corresponding outer cylinder, and the other end of the connecting support cylinder is fixed to the corresponding outer cylinder. Each stop pin is disposed in a pair of pin holes in the bottom of the corresponding outer cylinder, and clamps the corresponding fixing pin to stop the middle cylinder and the inner cylinder stacked in the corresponding telescopic leg from extending automatically.
Description
technical field [0001] The invention relates to underwater oil exploitation equipment, in particular to a recoverable multi-stage telescopic fixed leg for an underwater mud layer. Background technique [0002] At present, the guide frame of the subsea tree is one of the important equipment of the subsea tree. Its structure is mainly composed of four vertical guide columns and a guide frame connecting the four guide columns. Its function is to support the structure of the tree. and provide guidance for the subsea installation of the Christmas tree. [0003] The quality and volume of the underwater Christmas tree are huge, and it is vulnerable to the force of ocean currents on the seabed, the frequency vibration of oil exploitation, the dragging of underwater fishing nets, and even the effect of submarine earthquakes. At present, when the traditional subsea tree guide support structure is applied to the oil and gas production process of the subsea tree, the stability of the s...
Claims
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IPC IPC(8): E21B33/035E21B41/08
CPCE21B33/035E21B41/08
Inventor 张鹏举齐效文施佳梁斌黄河张浩楠李博汪伟俊涂再君许淑峰汤有兵冯建同饶斌
Owner MEIZUAN ENERGY TECH SHANGHAI