Tight glutenite reservoirs are widely developed in Bohai Bay Basin,East China.They are mostly huge thick and rely on hydraulic fracturing treatment for commercial exploitation.To investigate the propagation behavior o...Tight glutenite reservoirs are widely developed in Bohai Bay Basin,East China.They are mostly huge thick and rely on hydraulic fracturing treatment for commercial exploitation.To investigate the propagation behavior of hydraulic fractures in these glutenite reservoirs,the geological feature of reservoirs in Bohai Bay Basin is studied firstly,including the reservoir vertical distribution feature and the heterogeneous lithology.Then,hydraulic fracturing treatments in block Yan 222 are carried out and the fracturing processes are monitored by the microseismic system.Results show the hydraulic fractures generated in the reservoirs are mostly in X shape.The cause of X-shaped hydraulic fractures in this study is mainly ascribed to(I)the reservoir heterogeneity and(II)the stress shadow effect of two close hydraulic fractures propagating in the same orientation,which is confirmed by the following numerical simulation and related research in detail.This study can provide a reference for the research on the fracturing behavior of the deep thick glutenite reservoirs.展开更多
目的观察不同时期Kummell病骨组织形态学特征及骨代谢标志物变化规律。方法共纳入82例Kummell病患者,采集空腹血液样本检测骨代谢标志物水平。经椎弓根骨入路活检以收集骨活检标本,制备脱钙活检标本,运用光镜观察并进行骨组织形态计量...目的观察不同时期Kummell病骨组织形态学特征及骨代谢标志物变化规律。方法共纳入82例Kummell病患者,采集空腹血液样本检测骨代谢标志物水平。经椎弓根骨入路活检以收集骨活检标本,制备脱钙活检标本,运用光镜观察并进行骨组织形态计量学分析,参照Li分期法将患者分为三期。结果所有患者均顺利完成手术,Ⅰ期19例(23.2%),Ⅱ期39例(47.5%),Ⅲ期24例(29.3%)。发病时间Ⅰ期为5.2个月,Ⅱ期10.4个月,Ⅲ期18.5个月,差异有统计学意义(P<0.05)。骨组织形态学分析显示,软骨内骨(endochondral bone volume/tissue volume,EBV/TV)和肉芽组织(granulation or fibrous tissue volume/tissue volume,FV/TV)在Ⅰ期达到峰值(8.87%±0.25%和54.63%±3.52%),后逐渐被坏死骨组织(necrotic bone volume/tissue volume,NBV/TV)所取代,NBV/TV在Ⅰ期仅少量存在(4.81%±2.61%),但在Ⅲ期达到峰值(18.50%±2.77%)。骨代谢指标水平显示,骨钙素(osteocalcin,OC)在骨折后持续上升,在Ⅲ期达到峰值(38.15±3.84)μg/L;Ⅰ型胶原交联C-末端肽(β-isomerized C-terminal telopeptide,β-CTX)骨折后快速上升,在Ⅲ期继续上升至最高水平(1.31±0.16)μg/L;骨折后Ⅰ型原胶原N-端前肽(N-terminal propeptide of type I collagen,P1NP)下降,Ⅲ期达到谷值(38.57±7.25)μg/L。结论Kummell病不同时期组织形态特征以及骨转换标志物浓度各不相同。Ⅰ期骨形成能力较为活跃,有一定愈合可能;Ⅲ期对骨组织破坏程度最为严重,坏死骨组织含量显著升高。展开更多
基金Projects(51879041,51774112,U1810203)supported by the National Natural Science Foundation of ChinaProject(2020M672224)supported by the China Postdoctoral Science FoundationProject(B2020-41)supported by the Doctoral Fund of Henan Polytechnic University,China。
文摘Tight glutenite reservoirs are widely developed in Bohai Bay Basin,East China.They are mostly huge thick and rely on hydraulic fracturing treatment for commercial exploitation.To investigate the propagation behavior of hydraulic fractures in these glutenite reservoirs,the geological feature of reservoirs in Bohai Bay Basin is studied firstly,including the reservoir vertical distribution feature and the heterogeneous lithology.Then,hydraulic fracturing treatments in block Yan 222 are carried out and the fracturing processes are monitored by the microseismic system.Results show the hydraulic fractures generated in the reservoirs are mostly in X shape.The cause of X-shaped hydraulic fractures in this study is mainly ascribed to(I)the reservoir heterogeneity and(II)the stress shadow effect of two close hydraulic fractures propagating in the same orientation,which is confirmed by the following numerical simulation and related research in detail.This study can provide a reference for the research on the fracturing behavior of the deep thick glutenite reservoirs.
文摘目的观察不同时期Kummell病骨组织形态学特征及骨代谢标志物变化规律。方法共纳入82例Kummell病患者,采集空腹血液样本检测骨代谢标志物水平。经椎弓根骨入路活检以收集骨活检标本,制备脱钙活检标本,运用光镜观察并进行骨组织形态计量学分析,参照Li分期法将患者分为三期。结果所有患者均顺利完成手术,Ⅰ期19例(23.2%),Ⅱ期39例(47.5%),Ⅲ期24例(29.3%)。发病时间Ⅰ期为5.2个月,Ⅱ期10.4个月,Ⅲ期18.5个月,差异有统计学意义(P<0.05)。骨组织形态学分析显示,软骨内骨(endochondral bone volume/tissue volume,EBV/TV)和肉芽组织(granulation or fibrous tissue volume/tissue volume,FV/TV)在Ⅰ期达到峰值(8.87%±0.25%和54.63%±3.52%),后逐渐被坏死骨组织(necrotic bone volume/tissue volume,NBV/TV)所取代,NBV/TV在Ⅰ期仅少量存在(4.81%±2.61%),但在Ⅲ期达到峰值(18.50%±2.77%)。骨代谢指标水平显示,骨钙素(osteocalcin,OC)在骨折后持续上升,在Ⅲ期达到峰值(38.15±3.84)μg/L;Ⅰ型胶原交联C-末端肽(β-isomerized C-terminal telopeptide,β-CTX)骨折后快速上升,在Ⅲ期继续上升至最高水平(1.31±0.16)μg/L;骨折后Ⅰ型原胶原N-端前肽(N-terminal propeptide of type I collagen,P1NP)下降,Ⅲ期达到谷值(38.57±7.25)μg/L。结论Kummell病不同时期组织形态特征以及骨转换标志物浓度各不相同。Ⅰ期骨形成能力较为活跃,有一定愈合可能;Ⅲ期对骨组织破坏程度最为严重,坏死骨组织含量显著升高。
