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Preset production fluid section plane test method of mechanical mining horizontal well and special shaft mouth test apparatus

A technology of fluid production profile and testing method, which is applied in wellbore/well components, measurement, earthwork drilling and production, etc.

Active Publication Date: 2009-04-08
DAQING OILFIELD CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of testing the fluid production profile of a mechanically produced horizontal well, the present invention provides a method for testing the fluid production profile of a mechanically produced horizontal well and a special wellhead device

Method used

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  • Preset production fluid section plane test method of mechanical mining horizontal well and special shaft mouth test apparatus
  • Preset production fluid section plane test method of mechanical mining horizontal well and special shaft mouth test apparatus
  • Preset production fluid section plane test method of mechanical mining horizontal well and special shaft mouth test apparatus

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Embodiment Construction

[0019] The pre-set liquid production profile testing method for mechanically-produced horizontal wells uses a special test wellhead device, pre-preset testing instruments downhole, and cooperates with downhole tractors to realize the liquid production profile test of mechanically-produced horizontal wells.

[0020] The present invention will be further described below in conjunction with the accompanying drawings:

[0021] attached by figure 1 , attached figure 2 3, the special test wellhead device includes a special test wellhead and a wellhead support, and the special test wellhead includes a special flange 1, a large cross 9 and a built-in eccentric tubing hanger; the special method There is a lateral opening 13 on the blue plate 1 for easy insertion or removal of the test cable, such as figure 2 As shown, it is fastened on the flange plate of the large spool 9 by radially evenly distributed bolts 10; the eccentric oil pipe hanger includes the eccentric oil pipe hanger ...

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Abstract

The invention relates to a mechanical recovery horizontal well preset produced fluid profile testing method and a special wellhead testing device thereof, mainly aiming at solving the problem of the downhole testing of a mechanical recovery horizontal well. The invention is characterized in that: the special wellhead testing device comprises an eccentric type tubing hanger body connected with a tubing string, wherein, the side wall of the tubing hanger body is divided into a body and splits which are completely matched with each other, and the splits are fixed on a locking arm which is fixed on the body though bolts; and a corresponding matched cable penetrating a channel is arranged at the splitting seam of the body and the splits, the channel is internally provided with a cable gasket, a spacer and a pressing cap. By being matched with a special wellhead support, under the condition that a testing cable and a tester are pre-arranged in the horizontal well to test a target layer, an oil pipe does not touch the cable during the up and down process of the oil pipe. The method and the special wellhead testing device can realize the produced fluid profile testing of the mechanical recovery horizontal well, and ensure the accuracy of normal testing and data of the mechanical recovery horizontal well with simple and reliable operation method.

Description

technical field [0001] The invention relates to a method used in horizontal well testing operations in oilfields and a special wellhead device for implementing the method, in particular to a horizontal well preset liquid production profile testing method and a special testing wellhead device. Background technique [0002] With the continuous development of drilling technology, there are thousands of horizontal wells in oilfields across the country. Due to the rapid increase in the number of horizontal wells year by year, the recovery rate of underground oil layers has been greatly improved. However, a reasonable injection and production plan should be formulated for horizontal wells to prevent explosions In order to prevent water flooding and provide an important basis for stratified water plugging, it is necessary to test the liquid production profile of horizontal wells. In foreign countries, for horizontal well testing, two methods are generally used for testing: permanen...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B49/00E21B33/03E21B47/01
Inventor 韩传会李军刘兴斌毛军吴静波
Owner DAQING OILFIELD CO LTD
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