High energy gas fracturing provides a new way for economic and high efficient development of the low permeability reservoir.By the end of 1993,it is tested and used in more:than 50 oil production and water injection w...High energy gas fracturing provides a new way for economic and high efficient development of the low permeability reservoir.By the end of 1993,it is tested and used in more:than 50 oil production and water injection wells in Changqing Oilfield with treatment success rate of more than 92%,and treatment effective rate of 86%,with average increase of oil production 3.4 times and somewhat increase.of water iniectivity in the water wells,cumulative increment of oil produc-tion and water injection had reached 11660 tons and 39220 cubic meters respectively.The test was undertaken by 0il Drilling&Production Tech-nology Research Institute in collaboration with Oil Production Plant,both are subordinated to Changqing Petroleum Exploration Bureau.展开更多
Purpose:Tibial plateau fracture(TPF)is a devastating injury as it shatters lower articular surface of the largest joint.Apart from bony injury,TPF can lead to great soft tissue envelope compromise which affects the tr...Purpose:Tibial plateau fracture(TPF)is a devastating injury as it shatters lower articular surface of the largest joint.Apart from bony injury,TPF can lead to great soft tissue envelope compromise which affects the treatment plan and outcome.In the present study,clinical results were assessed in cases of high energy TPFs treated in staged manner.Methods:Twenty-three(20 males and 3 females)patients of high energy communited TPFs(Schatzker typeⅤandⅥ)were consecutively treated.1 All the patient had compromise of overlying skin conditions.They were all successively scheduled for staged treatment plan which comprised of application of bridging knee external fixator on the first day of admission and definitive internal fixation after skin and soft tissue overlying the fracture were healed.Schatzker typeⅠ,Ⅱ,ⅢandⅣwere excluded from the study.Primary survey was done and patient who had head injury,chest and abdominal injury,pelvic injury and contralateral limb injury and open fractures were excluded from the study.The patients were also evaluated in terms of wound complications,axial and rotary alignment of limb,fixation failure,articular congruity and range of motion of the knees and post injury employment.Statistical analysis was done using SPSS software.Results:Maximum follow-up period was 13 months.All the fractures were united at final follow-up.Clinical evaluation was done with the Tegner Lysholm knee scoring scale.2 Excellent results were found in 78%cases and good and fair results in 22%cases.There was significant correlation between range of motion and the Tegner Lysholm knee score(p<0.001,Pearson correlation coefficient=0.741).The correlation between the score and the radiographical union duration was significant(p=0.006,Pearson correlation coefficient=-0.554).Conclusion:A staged treatment plan allows healing of soft tissue envelope,with avoidance of dreadful complications such as compartment syndrome and chronic infection.In addition,a staged treatment strategy does not hamper the fracture reduction,bony union and the functional results.展开更多
文摘High energy gas fracturing provides a new way for economic and high efficient development of the low permeability reservoir.By the end of 1993,it is tested and used in more:than 50 oil production and water injection wells in Changqing Oilfield with treatment success rate of more than 92%,and treatment effective rate of 86%,with average increase of oil production 3.4 times and somewhat increase.of water iniectivity in the water wells,cumulative increment of oil produc-tion and water injection had reached 11660 tons and 39220 cubic meters respectively.The test was undertaken by 0il Drilling&Production Tech-nology Research Institute in collaboration with Oil Production Plant,both are subordinated to Changqing Petroleum Exploration Bureau.
文摘Purpose:Tibial plateau fracture(TPF)is a devastating injury as it shatters lower articular surface of the largest joint.Apart from bony injury,TPF can lead to great soft tissue envelope compromise which affects the treatment plan and outcome.In the present study,clinical results were assessed in cases of high energy TPFs treated in staged manner.Methods:Twenty-three(20 males and 3 females)patients of high energy communited TPFs(Schatzker typeⅤandⅥ)were consecutively treated.1 All the patient had compromise of overlying skin conditions.They were all successively scheduled for staged treatment plan which comprised of application of bridging knee external fixator on the first day of admission and definitive internal fixation after skin and soft tissue overlying the fracture were healed.Schatzker typeⅠ,Ⅱ,ⅢandⅣwere excluded from the study.Primary survey was done and patient who had head injury,chest and abdominal injury,pelvic injury and contralateral limb injury and open fractures were excluded from the study.The patients were also evaluated in terms of wound complications,axial and rotary alignment of limb,fixation failure,articular congruity and range of motion of the knees and post injury employment.Statistical analysis was done using SPSS software.Results:Maximum follow-up period was 13 months.All the fractures were united at final follow-up.Clinical evaluation was done with the Tegner Lysholm knee scoring scale.2 Excellent results were found in 78%cases and good and fair results in 22%cases.There was significant correlation between range of motion and the Tegner Lysholm knee score(p<0.001,Pearson correlation coefficient=0.741).The correlation between the score and the radiographical union duration was significant(p=0.006,Pearson correlation coefficient=-0.554).Conclusion:A staged treatment plan allows healing of soft tissue envelope,with avoidance of dreadful complications such as compartment syndrome and chronic infection.In addition,a staged treatment strategy does not hamper the fracture reduction,bony union and the functional results.
