Horizontal well segmented water-injection process pipe column and distribution method
A technology for a process pipe string and a horizontal well, which is applied in the field of the horizontal well staged water injection process pipe string and its deployment, can solve the problems of long measurement period, heavy workload of staff, and inability to test the water injection condition of a single layer in the well, and achieves improved performance. The effect of testing efficiency and saving manpower
Inactive Publication Date: 2019-02-12
PETROCHINA CO LTD
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Problems solved by technology
[0004] However, in the above deployment process, it is inevitable to use steel wire or cable for flow testing and deployment. After a single deployment, the downhole single-layer water injection cannot be tested.
In order to realize the injection requirements of each layer, it is necessary to go down the well for measurement and adjustment many times, resulting in a very heavy workload for the staff, and the measurement period is very long, and the test efficiency is low
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[0021] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments.
[0022] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0023] Among them, the terms "before" and "end" are used to describe the relative positional relationship of the various structures in the drawings, which are only for ease of description and are not used to li...
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The invention discloses a horizontal well segmented water-injection process pipe column and a distribution method. The horizontal well segmented water-injection process pipe column comprises two or more water distributors, and a pressure-maintaining expansion type packer is arranged between every two water distributors; a mechanical compression type packer is arranged between a safety joint and the water distributor facing the front end of an oil pipe; each water distributor is internally provided with a main control unit, a wireless communication module, a measuring device, a flow adjusting device and a power source; the measuring devices are used for measuring the water injection pressure of water injection flowmeters; the main control units are used for controlling the flow adjusting devices to adjust the open degrees of water nozzles and used for recognizing instructions sent by a ground control terminal; and the wireless communication modules are used for communicating with the outside. The downhole flow is tested by the measuring devices of the water distributors, the downhole flow is distributed through control of the main control units of the water distributors over the flow adjusting devices, thus distribution construction for layered injection well steel wire or cable testing in the prior art is omitted, a large amount of manpower is saved, and the testing efficiencyis effectively improved.
Description
Technical field [0001] The invention relates to water injection technology for oil and gas wells, in particular to a horizontal well segmented water injection process pipe string and a deployment method thereof. Background technique [0002] At present, domestic oilfields mainly use water injection to extract oil and gas, and water injection is mainly carried out by layering; the main layered water injection technology includes hollow injection technology, concentric injection technology, and eccentric injection technology; the corresponding supporting measurement and adjustment technology mainly includes Steel wire operation measurement and adjustment technology, cable operation measurement and adjustment technology. [0003] The hollow dispensing process uses a hollow water distributor for layer-by-layer water distribution, a steel wire carrying a flow meter for flow test, and flow adjustment by replacing the water nozzle installed on the water distribution core of the central ch...
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Login to View More IPC IPC(8): E21B43/20E21B47/00
CPCE21B43/20E21B47/00
Inventor 张鹏马帅帮李明平李鹏辉
Owner PETROCHINA CO LTD