Percussion initiator used for oil-gas well perforation
A technology for detonators and oil and gas wells, which is applied in wellbore/well components, production fluids, earthwork drilling and production, etc. It can solve problems such as economic loss, perforation blasting guns, and restrictions on the scope of use, so as to achieve reliable detonation and avoid blasting guns Effect
Pending Publication Date: 2019-04-26
WUHUA ENERGY TECH CO LTD
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Problems solved by technology
Due to the many sealing links of the perforating gun, the labor intensity of the tubing transmission perforation itself, and the high frequency of construction, it is difficult to ensure that the perforation strings for each downhole construction are well sealed
The frequent construction quality accidents show that in most cases, the well fluid enters the perforating gun due to the failure of the seal of a certain link of the perforating gun string, and the perforating gun explodes after detonation (abnormal perforation), resulting in major economic losses
For this reason, the patent "A Percussion Initiator for Oil and Gas Well Perforation" (CN108374651A) invented a detonation transmission device, which provides an effective method for solving the problem of perforating gun explosion caused by liquid ingress
However, since the detonation device contains a primer, it increases the safety hazards of the operators to a certain extent, and at the same time, because the detonation device does not have two-way detonation transmission characteristics, its application range is limited to a certain extent.
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[0026] see figure 1 — Figure 9 , a percussion initiator for perforating oil and gas wells, comprising a non-priming explosive percussion cap 1, a cap seat 2, a non-priming detonator 3 and a detonator seat 4; , gasket 6, medicament 7 and housing 8, wherein fire platform 5, gasket 6 and housing 8 are made of stainless steel; the medicament 7 is titanium powder (average particle size 5 microns) and potassium perchlorate (average particle 20 microns) of uniform mixture, and titanium powder: potassium perchlorate=(36~46)%: (54~64)% (mass ratio); Described non-priming explosive detonator 3 is made of inner shell 10, explosive 11 and outer The tube shell 12 is composed of the tube shell 12, wherein the inner tube shell 10 and the outer tube shell 12 are aluminum materials, and the explosive 11 is a high-temperature-resistant explosive with low mechanical sensitivity but high flame sensitivity; the detonator seat 4 has four through holes in total. , one is a transverse through hole...
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Abstract
The invention relates to a percussion initiator used for oil-gas well perforation. The percussion initiator used for oil-gas well perforation comprises a non-primary explosive percussion primet, a primet base, a non-primary explosive detonator and a body. The percussion initiator used for oil-gas well perforation is used in an oil-gas well oil pipe transmission perforation initiation device, and has the effects of improving the safety of perforation construction work on the aspect of intrinsic safety, and effectively avoiding explosion gun construction accidents caused by inlet liquid of a perforation gun.
Description
technical field [0001] The invention relates to the field of oil and gas well perforation, in particular to an impact detonator suitable for oil and gas well oil pipe transmission perforation. Background technique [0002] Under the safe high-pressure situation, engineering blasting has attracted much attention, and the perforating field of oil and gas wells is no exception, which makes the safety of operators more and more important. For the safety of operators, many methods have been devised in the perforating field of oil and gas wells at home and abroad. For example, a safety gun is added between the detonating device and the perforating gun. The perforating gun is generally about 3 meters long, and its purpose is to keep the detonated perforating gun far away from the operating personnel in case the detonating device accidentally fires, so as to reduce the degree of casualties. However, this does not improve operational safety from the perspective of intrinsic safety o...
Claims
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Login to View More IPC IPC(8): E21B43/1185E21B43/119
CPCE21B43/1185E21B43/119
Inventor 彭加斌刘帅王雪艳张虎魏领王锋陈志伟刘正彦常昕杨伟罗兴平闵杰
Owner WUHUA ENERGY TECH CO LTD