|
Recoverable reserves of heavy oil , extra-heavy oil and tar sands in the world is about 1510 × 108m3, more than conventional crude oil . Diminishing as the production of conventional crude oil , heavy oil will be as the main source of energy to compensate for the reduced production of conventional crude oil and deficiencies . In this study, Qi Block 40 by the cyclic steam stimulation turn the steam flooding process in the research at home and abroad heavy oil reservoir development experience and technical forefront of the development on the basis of theoretical research and mine practice a combination of approaches , thick oil development to turn the steam flooding technology in-depth study , preferably achieved the following results : the drive transfer through steam steam flooding pilot test , after years of practice and exploration , the formation of a set of steam injection - production technology system : high temperature steam flooding Validity insulated steam injection technology , high temperature corrosion resistant lift technology , gas tracers monitoring technology , high-temperature testing technology , stratified steam flooding technology, high - temperature stimulation and casing deformation wells repair techniques , field applications and achieved good results . 2, to determine the filling sands output and skeletal sand broken off the main form of reservoir sand . Reservoir filled with sand and skeletal sand limit the flow rate of the influencing factors and variation in hydrodynamics, gravity, van der Waals forces , the degree of fluid into the well under the combined effects of the electric double layer repulsion force environment and filling sand , sand moving door . 3, analysis of reservoir sand critical liquid production , perforation radius and the variation of the cumulative amount of sand . 4, Qi 40 block sand preferably fuzzy mathematical model of fuzzy decision-making method is aligned on a 40 - block sand , technical and economic conduct a comprehensive analysis of various important factors considered in the weight matrix according to the principle of maximum membership and the extent of the application of these factors in a variety of sand realistic judgment , preferably out of the study area the optimal sand TBS sand Screen method . The experimental analysis shows that the new sand control tools have better penetration than the old sand tools , able to adapt to Qi 40 sand characteristics , can be 40 to expand the application with .
|