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Down hole triggering sliding sleeve control system and control method

A control method and technology for a control system, which are applied in the field of downhole triggering sliding sleeve control system and control, and can solve problems such as construction progress lag

Inactive Publication Date: 2017-06-30
成都众智诚成石油科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a downhole trigger sliding sleeve control system and control method, aiming at solving the serious lagging problem of the construction progress caused by the casing deformation caused by the staged fracturing + perforation and bridge plug continuous operation process used in the current oil and gas well stimulation reconstruction , and save the time and cost of lowering bridge plugs and perforating, and greatly improve the efficiency of oil and gas well stimulation

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  • Down hole triggering sliding sleeve control system and control method
  • Down hole triggering sliding sleeve control system and control method
  • Down hole triggering sliding sleeve control system and control method

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] In field construction, multiple downhole trigger sleeves are usually run into at one time with the casing or tubing. In order to ensure the independent control and opening of each downhole trigger sleeve, different control instructions are set for each slide sleeve in advance before going into the well. Each sliding sleeve is continuously searching the electromagnetic wave signal sent from the ground, and only when the received electromagnetic wave signal matches the control command set by itself, the sliding sleeve will move.

[0026] In the ground electromagnetic wave transmission method, when there is only one oil...

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Abstract

The invention discloses a down hole triggering sliding sleeve control system and control method. The down hole triggering sliding sleeve control method comprises the following steps that a control instruction is sent to a down hole triggering sliding sleeve in the mode that an electromagnetic wave is sent on the ground; the sliding sleeve is opened in the mode of gunpowder burning explosion; and a piston rod is pushed in the mode of gunpowder burning explosion to enable the piston rod to upwards move to open the down hole triggering sliding sleeve. According to the down hole triggering sliding sleeve control system and control method, the control instruction is sent to the down hole triggering sliding sleeve in the mode that the electromagnetic wave is sent on the ground, and through the modes that an elastic film is installed at the outer end of a spray hole, and a cavity formed by the spray hole and the piston rod through sealing rings at the two ends is filled with a balancing solution, it is guaranteed that well cement slurries do not enter the cavity of the down hole triggering sliding sleeve through the spray hole in the well cementing process. The down hole triggering sliding sleeve control system and control method are easy to operate, reliable, low in cost and capable of greatly improving fracture acidizing construction efficiency, meanwhile any opening tools do not to downwards enter, and the down hole complex accident is avoided to the biggest extent.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field stimulation and transformation, and in particular relates to a downhole trigger sliding sleeve control system and a control method. Background technique [0002] The problem of insufficient domestic oil and gas supply is becoming more and more prominent. The recoverable and easily recoverable reserves of oil are constantly decreasing. Exploration and development are developing towards deep and unconventional hidden oil reservoirs. Fracturing and acidizing stimulation are required in the well process, and fracturing and acidizing stimulation has become the most effective measure to solve interlayer conflicts, improve the production degree of oil layers, and tap the interlayer potential. With the development of technology, existing oil and gas wells usually adopt staged fracturing and acidizing technology, but currently there is no reliable fracturing and acidizing technology that can take...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/14E21B34/16
CPCE21B34/14E21B34/16
Inventor 石建国刘亚青
Owner 成都众智诚成石油科技有限公司
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