Optimize the Design and Development of High Shot Density Oil Perforator
|Course||Earth Exploration and Information Technology|
|Keywords||High shot density Perforator Penetration Finite Element|
Perforating operation in oil and gas exploration and development plays animportant role of the "finishing touches" to its direct impact on the quality of theyield of oil and gas wells and the production costs. Main factors perforatingaffect the yield of oil and gas wells, wear deep hole density, drilling the extentof damage, the degree of compaction damage, pore size, phase, wellboreradius, stratigraphic heterogeneity compacted thickness, drilling pollutionthickness. A lot of research and practice has proved that, regardless of theeyelet whether penetration drilling pollution with perforating hole density andwear deep impact perforating the well capacity of the two most importantfactors. Therefore, improving the penetration depth and hole density is themost effective way to improve oil and gas well production capacity.Compared with ordinary perforator high hole density perforatingperforating better able to reduce the reservoir skin factor increased wellboredischarge area to reduce flow resistance. High hole density perforatingaddition to the increase demand to meet the high porosity and permeability,low pollution and reservoir, but also significantly improved in low-permeability,low pressure in the reservoir as well as the structure of complex reservoirproduction rate. For heavy oil sand reservoirs, high hole density perforating notonly through increasing the discharge area to increase capacity, cansignificantly reduce the fluid velocity and drag of the sand, the sand so as toachieve the purpose of the stable. The above-mentioned advantages of thehigh pore density perforation technology has good prospects for developmentand competitive advantage, high hole density perforation has become animportant way to improve the production capacity of the oil and gas wells. However, the technical difficulty of the hole density perforating. Found inthe product performance testing, the hole density reaches a certain threshold,the perforation indicators exist significant fluctuation phenomena. Bombintersymbol interference is the main cause of this phenomenon. Interferenceled to inter-bomb the perforating Center deviate from the established center,the jet energy concentration decreased, reduce the the perforating depth andround hole rate, thereby severely reducing the perforation quality. In the caseof no systematic studies, no scientific basis, it is difficult to find an effectivemethod of suppressing the interference between the projectile.The course of the study, the main mechanism of interference generated bythe use of finite element analysis, systems analysis bombs. Combined withperforated shells and the detonating cord optimal arrangement mode, to findan optimized high hole density oil the perforator cloth bomb. Thereby reducingthe influence of interference between the shells, to improve perforation quality.With the in-depth development of the oil and gas exploration anddevelopment, low porosity and low permeability reservoir, loose heavy oilreservoir and other difficult mining, increasing the proportion of oil and gasreservoirs. Development of these main problems encountered by the reservoircapacity and output is low, high development costs, stable short time, affectingthe entire oil and gas production to increase or maintain. And efficientperforating and perforating process development suitable for the reservoir isan important task for the industry.