Safety control method for deflagration fracturing of sieve tube well
A safety control and screen technology, which is applied in earthwork drilling, wellbore/well components, production fluids, etc., can solve the problems of potential safety hazards, lack of safety control methods for deflagration and fracturing of screen wells, and lack of comprehensive safety considerations, etc. , to achieve the effect of improving the degree of precision
Active Publication Date: 2018-12-07
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
[0003] In terms of screen wells, patented technologies such as CN105971580B "a screen deflagration fracturing experimental device and method" and CN206035464U "a deflagration fracturing device suitable for screen wells" have been formed to provide screen well deflagration fracturing Some safety control methods and means have been introduced, but there is still a lack of comprehensive consideration of overall safety, which cannot run through the entire operation process, and is limited to the construction pipe string and ground experiment methods. Therefore, there are still potential safety hazards. At the same time, there is no safety control method for the deflagration and fracturing operation system of screen wells at home and abroad, which limits the development and application of technology in screen wells.
[0004] In summary, there is currently a lack of a safety control method for screen well deflagration fracturing in China, which provides an overall safety control method for screen well implementation of deflagration fracturing technology
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[0027] In order to make the present invention more clearly understood, the present invention will be further described below in conjunction with the accompanying drawings.
[0028] The invention protects a screen well deflagration fracturing safety control method, comprising the following steps:
[0029] (1) Gunpowder optimization; gunpowder optimization includes gunpowder type selection, gunpowder parameter primary selection, and gunpowder screening by using a simulation model;
[0030] (2) Simulation experiment of ground shooting:
[0031] Make casings with pressure relief holes and multiple ground simulation targets externally consolidated with cement, and place different amounts of deflagration fracturing gunpowder, screen tubes and P-T pressure measuring devices in different simulation targets. Before deflagration fracturing , and finally detect the sand-retaining accuracy of the screen; in this embodiment, the P-T test device is a storage test device that can record the...
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The invention discloses a safety control method for deflagration fracturing of a sieve tube well. The method includes the following steps of gunpowder selection, ground target shooting simulation experiment, underground verification experiment, operating well plan determination and parameter correction, safety setting of operating well construction pipe column and operating well construction, andeffect tracking. The method provides an effective safety guarantee for the deflagration fracturing implementation of the sieve tube well in the whole operation process, the operation safety is furthercontrolled from the aspects of gunpowder selection, model simulation, ground experiment, underground verification, parameter correction, construction pipe column and so on, and the experiments are closely combined with the site, the influence of experimental errors is overcome, the precision of conventional deflagration fracturing operations is improved, and the application scope of the deflagration fracturing is further expanded.
Description
technical field [0001] The invention belongs to the fields of oil and gas field reservoir transformation technology and well completion, and in particular relates to a safety control method for deflagration and fracturing of a screen well. Background technique [0002] The deflagration fracturing technology is suitable for the stimulation of low-permeability near-water reservoirs, and is a low-cost gas fracturing technology that has been researched and tackled key problems at home and abroad. At present, this technology is mainly used in casing perforated wells, including deflagration fracturing bombs for open-hole wells (open-hole bombs), shell bomb fracturing technology, caseless bomb fracturing technology, liquid charge fracturing technology, perforation- HEGF compound technology. However, there are few applications in screen wells. Offshore oilfields have a large number of screen wells and a high proportion. According to incomplete statistics, the total number of screen...
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Login to View More IPC IPC(8): E21B43/263E21B47/06
CPCE21B43/263E21B47/06
Inventor 孙林黄波杨万有易飞罗东红邹信波李旭光周际永杨军伟熊培祺
Owner CHINA NAT OFFSHORE OIL CORP