In view of the present author, in the process of oil field drilling, when the pumping unit is at work, the vibrations of the pumping unit caused by internal will cause the earthquake back, leading to damage increased ...In view of the present author, in the process of oil field drilling, when the pumping unit is at work, the vibrations of the pumping unit caused by internal will cause the earthquake back, leading to damage increased incidence of pumping unit interior parts. Develop a new type of shock absorber of the pumping unit;the damping base is set in the bottom of the pumping unit, and the first buffer mechanism and the second buffer mechanism are set up in the dumping base;under the action of the first buffer mechanism and the second buffer mechanism, the vibration is buffered when the pumping unit works and the work safety risks is eliminated at the same time;thus it has very high use value.展开更多
Overpressure is widely developed in deep petroliferous strata in the hinterland of the Junggar Basin.However,a comprehensive understanding of its origin and effect on hydrocarbon distribution and enrichment remains la...Overpressure is widely developed in deep petroliferous strata in the hinterland of the Junggar Basin.However,a comprehensive understanding of its origin and effect on hydrocarbon distribution and enrichment remains lacking.In this study,we employ five empirical methods and comprehensive geological analysis to identify the origin of overpressure,and uncover the effect of overpressure on hydrocarbon enrichment.The results indicate that disequilibrium compaction is not a significant factor in overpressure generation.Instead,hydrocarbon generation,pressure transfer and diagenesis are the primary causes.The empirical methods support this conclusion.There is a positive correlation between overpressure intensity and source rock thickness and maturity.Notably,widespread cross-formational migration of hydrocarbon bearing fluid occurred,with sandstone overpressure exceeding that of adjacent shale in non-source strata.Furthermore,there is a distinct transformation from smectite to illite near the top of overpressure.Hydrocarbon generation pressurization and pressure transfer significantly effect hydrocarbon enrichment.The overpressure caused by hydrocarbon generation drives hydrocarbon migration and accumulation,establishing an optimal energy configuration between reservoir and cap rock.Faults play a crucial role in hydrocarbon vertical migration and pressure relief.The overpressure in reservoirs can reduce the porosity and permeability thresholds and enhance the charging capacity of oil and gas.展开更多
The xxx area of the xxx oilfield was put into development in 1993 with a production reserve of 3.47 million tons. As the oil is thick and the formation energy level is kept low, various development methods such as ste...The xxx area of the xxx oilfield was put into development in 1993 with a production reserve of 3.47 million tons. As the oil is thick and the formation energy level is kept low, various development methods such as steam stimulation, air flooding, carbon dioxide + viscosity reducer stimulation have been tested with unsatisfactory development results. At present, the well opening rate is only 32.8%, the oil production rate is 0.2%, and the recovery rate is 12.7%. It is urgent to study the conversion of development methods. Through comparison with the north of adjacent areas, it is decided to learn from the successful experience of viscosity reduction compound flooding in adjacent blocks. Based on the detailed geological research in the early stage, this paper analyzes the development effect and the main problems existing in the south of the block, evaluates the feasibility of reducing viscosity and conforming to flooding, and puts forward the next treatment measures, which also provides a basis for the development of similar reservoirs.展开更多
Public service is an important basic guarantee for state-owned enterprises to realize the high-quality development of their main business. Ensuring the quality of public service is an important task for the functional...Public service is an important basic guarantee for state-owned enterprises to realize the high-quality development of their main business. Ensuring the quality of public service is an important task for the functional departments and practitioners of state-owned enterprises in a period of time. As a key role in the "three standards" (standardized team, standardized post, standardized site) system construction in state-owned enterprises, especially the grass-roots management, is undoubtedly an important means to realize the value of state-owned enterprises public service under the new situation. Based on this, this paper combines with the work practice, and detailed expounds the creation and practice of the "three standards" management and promotion system in the public service of state-owned enterprises under the new normal.展开更多
The pore characteristics of shale reservoirs in the lower submember of Member 3 to upper submember of Member 4 of Shahejie Formation in Dongying sag are analyzed,influences of mineral content and organic matter conten...The pore characteristics of shale reservoirs in the lower submember of Member 3 to upper submember of Member 4 of Shahejie Formation in Dongying sag are analyzed,influences of mineral content and organic matter content on porosity and pore size are also investigated,and through the diagenetic thermal simulation experiment,the main pore evolution is further discussed.The results show that the pore structure of shale reservoirs is complex,the micron-nanometer pores can storage liquid hydrocarbons,and the free-phase crude oil is mainly distributed in intergranular dissolution pores of calcite,recrystallized intergranular pores,intergranular shrinkage fractures of clay mineral which have large pore size.Framework minerals and organic matter content directly influence porosity and pore size of shale reservoirs,relationship between porosity and content of felsic mineral as well as content of organic matter content is linear and positive,while relationship between content of carbonated mineral is negative.At the buried depth from 2500 to 3500 m,concentration of organic acid from hydrocarbon generation and expulsion of organic matter,increasing range of pressure coefficient,are well corresponding to highporosity intervals;pore formation in shale oil reservoirs are almost controlled by diagenetic evolution of clay minerals;framework storage spaces formed by carbonate grain crystals as well as intergranular and intergranular dissolution pores of carbonate increases porosity of shale oil reservoirs;local increase of porosity at the depth of 3500e3800 m is mainly caused by coupling of hydrocarbon-generating overpressure and dissolution,and size,distribution and connectivity of pores are enhanced obviously.展开更多
文摘In view of the present author, in the process of oil field drilling, when the pumping unit is at work, the vibrations of the pumping unit caused by internal will cause the earthquake back, leading to damage increased incidence of pumping unit interior parts. Develop a new type of shock absorber of the pumping unit;the damping base is set in the bottom of the pumping unit, and the first buffer mechanism and the second buffer mechanism are set up in the dumping base;under the action of the first buffer mechanism and the second buffer mechanism, the vibration is buffered when the pumping unit works and the work safety risks is eliminated at the same time;thus it has very high use value.
基金supported by the National Natural Science Foundation of China(Grant Nos.42172147 and 41972141).
文摘Overpressure is widely developed in deep petroliferous strata in the hinterland of the Junggar Basin.However,a comprehensive understanding of its origin and effect on hydrocarbon distribution and enrichment remains lacking.In this study,we employ five empirical methods and comprehensive geological analysis to identify the origin of overpressure,and uncover the effect of overpressure on hydrocarbon enrichment.The results indicate that disequilibrium compaction is not a significant factor in overpressure generation.Instead,hydrocarbon generation,pressure transfer and diagenesis are the primary causes.The empirical methods support this conclusion.There is a positive correlation between overpressure intensity and source rock thickness and maturity.Notably,widespread cross-formational migration of hydrocarbon bearing fluid occurred,with sandstone overpressure exceeding that of adjacent shale in non-source strata.Furthermore,there is a distinct transformation from smectite to illite near the top of overpressure.Hydrocarbon generation pressurization and pressure transfer significantly effect hydrocarbon enrichment.The overpressure caused by hydrocarbon generation drives hydrocarbon migration and accumulation,establishing an optimal energy configuration between reservoir and cap rock.Faults play a crucial role in hydrocarbon vertical migration and pressure relief.The overpressure in reservoirs can reduce the porosity and permeability thresholds and enhance the charging capacity of oil and gas.
文摘The xxx area of the xxx oilfield was put into development in 1993 with a production reserve of 3.47 million tons. As the oil is thick and the formation energy level is kept low, various development methods such as steam stimulation, air flooding, carbon dioxide + viscosity reducer stimulation have been tested with unsatisfactory development results. At present, the well opening rate is only 32.8%, the oil production rate is 0.2%, and the recovery rate is 12.7%. It is urgent to study the conversion of development methods. Through comparison with the north of adjacent areas, it is decided to learn from the successful experience of viscosity reduction compound flooding in adjacent blocks. Based on the detailed geological research in the early stage, this paper analyzes the development effect and the main problems existing in the south of the block, evaluates the feasibility of reducing viscosity and conforming to flooding, and puts forward the next treatment measures, which also provides a basis for the development of similar reservoirs.
文摘Public service is an important basic guarantee for state-owned enterprises to realize the high-quality development of their main business. Ensuring the quality of public service is an important task for the functional departments and practitioners of state-owned enterprises in a period of time. As a key role in the "three standards" (standardized team, standardized post, standardized site) system construction in state-owned enterprises, especially the grass-roots management, is undoubtedly an important means to realize the value of state-owned enterprises public service under the new situation. Based on this, this paper combines with the work practice, and detailed expounds the creation and practice of the "three standards" management and promotion system in the public service of state-owned enterprises under the new normal.
基金The work was supported by the National Science and Technology Major Project of China(No.2017ZX05049)the National Basic Research Program of China(973 Program)(No.2014CB239102)the National Natural Science Foundation of China(No.41572087).
文摘The pore characteristics of shale reservoirs in the lower submember of Member 3 to upper submember of Member 4 of Shahejie Formation in Dongying sag are analyzed,influences of mineral content and organic matter content on porosity and pore size are also investigated,and through the diagenetic thermal simulation experiment,the main pore evolution is further discussed.The results show that the pore structure of shale reservoirs is complex,the micron-nanometer pores can storage liquid hydrocarbons,and the free-phase crude oil is mainly distributed in intergranular dissolution pores of calcite,recrystallized intergranular pores,intergranular shrinkage fractures of clay mineral which have large pore size.Framework minerals and organic matter content directly influence porosity and pore size of shale reservoirs,relationship between porosity and content of felsic mineral as well as content of organic matter content is linear and positive,while relationship between content of carbonated mineral is negative.At the buried depth from 2500 to 3500 m,concentration of organic acid from hydrocarbon generation and expulsion of organic matter,increasing range of pressure coefficient,are well corresponding to highporosity intervals;pore formation in shale oil reservoirs are almost controlled by diagenetic evolution of clay minerals;framework storage spaces formed by carbonate grain crystals as well as intergranular and intergranular dissolution pores of carbonate increases porosity of shale oil reservoirs;local increase of porosity at the depth of 3500e3800 m is mainly caused by coupling of hydrocarbon-generating overpressure and dissolution,and size,distribution and connectivity of pores are enhanced obviously.
