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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: 2012-05-23
DAQING OILFIELD CO LTD +1
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  • Summary
  • Abstract
  • Description
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  • Application Information

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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 method for testing the liquid production profile of the mechanically produced horizontal well is to use a special test wellhead device, pre-set the test instrument in the downhole, and cooperate with the downhole tractor to realize the test of the liquid production profile of the mechanically produced horizontal well.

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

[0021] attached by figure 1 , attached figure 2 and attached image 3 As shown, 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; There are side openings 13 for easy insertion and removal of test cables, such as figure 2 As shown, the radially evenly distributed bolts 10 are fastened on the flange of the large cross 9; the eccentric oil pipe hanger includes the eccentric oil pipe hanger mai...

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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 present invention relates to a method used in oilfield horizontal well testing operations 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, it is necessary to formulate reasonable injection-production plans for horizontal wells to prevent sudden To prevent permanent water flooding and provide an important basis for layered water plugging, it is necessary to test the fluid production profile of the horizontal well. In foreign countries, for horizontal well testing, two methods of permanent monitoring and downhole ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/047E21B49/00E21B33/03E21B47/00E21B47/01
Inventor 韩传会李军刘兴斌毛军吴静波
Owner DAQING OILFIELD CO LTD
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