检索结果-南通市图书馆

Extracting angle-domain common-image gathers in VTI media using ansiotropic-Helmholtz P/S wave-mode decomposition

petroleum Science 2023年第3期20卷 1546-1561页

作者： Le-Le Zhang Yang Zhao Lu Liu Ke Chen Jia-Hui Zuo Yi-Xin Wang Ji-Dong Yang state key laboratory of petroleum resource and prospecting Unconventional Petroleum Research InstituteChina University of PetroleumBeijing102249China Aramco Beijing research center Aramco AsiaBejing100102China Department of Geophysics China University of Petroleum(East China)QingdaoShandong266580China

Common-image gathers are extensively used in amplitude versus angle(AVA)and migration velocity analysis(MVA).The current state of methods for anisotropic angle gathers extraction use slant-stack,local Fourier transform or low-rank approximation,which requires much *** on an anisotropic-Helmholtz P/S wave-mode decomposition method,we propose a novel and efficient approach to produce angle-domain common-image gathers(ADCIGs)in the elastic reverse time migration(ERTM)of VTI *** start with,we derive an anisotropic-Helmholtz decomposition operator from the Christoffel equation in VTI media,and use this operator to derive the decomposed formulations for anisotropic P/S ***,we employ the first-order Taylor expansion to calculate the normalized term of decomposed formulations and obtain the anisotropic-Helmholtz decomposition method,which generates the separated P/S wavefields with correct amplitudes and ***,we develop a novel way that uses the anisotropic-Helmholtz decomposition operator to define the polari-zation angles for anisotropic P/S waves and substitute these angles to decomposing *** polarization angles are then calculated directly from the separated vector P-and S-wavefields and converted to the phase *** ADCIGs are thusly produced by applying the phase angles to VTI *** addition,we develop a concise approximate expression of residual moveout(RMO)for PP-reflections of flat reflectors in VTI media,which avoids the complex transformations between the group angles and the phase *** approximate RMO curves show a good agreement with the exact solution and can be used as a tool to assess the migration velocity *** demonstrated by two selected examples,our ADCIGs not only produce the correct kinematic responses with regards to different velocity pertubatation,but also generate the reliable amplitude responses versus different *** final stacking images of ADCIGs data exhibit the identical im

关键词： Helmholtz decomposition Angle gathers Anisotropy Elastic-RTM

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Paleo-oil-Water Contact and Present-Day gas-Water Contact:Implication for Evolution History of Puguang gas Field, Sichuan Basin, China

引用

Journal of China University of Geosciences 2008年第6期19卷 715-725页

作者：李平平邹华耀张元春王存武张学丰 state key laboratory of petroleum resource and prospecting China University of Petroleum CNOOC research center

The Puguang （普光） gas field is the largest gas field found in marine carbonate in China. The Puguang gas field experienced complicated evolution history from paleo-oil pool to gas pool. The purpose of this article is to reveal the evolution history of Puguang gas field through systematic study on the relationship between paleo-oil-water contact （POWC） and present-day gas-water contact （PGWC）. POWC was recognized by observing the change of relative content of residual solid bitumen in the cores, and PGWC was observed using log and drilling stem test data. Two types of relationship between POWC and PGWC were observed in the Puguang gas field： POWC is above PGWC, and POWC is below PGWC. The former is normal as oil cracking may cause gas-water contact to move downward. The latter can be interpreted by lateral gas re-migration and re-accumulation caused by changes in structural configuration. The relationship between POWC and PGWC suggests that during oil charge, the southwestern and northwestern parts of the Puguang gas field were structurally lower than the northeastern and southeastern parts. Thrusting from Xuefengshan （雪峰山） since Yanshanian movement and from Dabashan （大巴山） since Himalayan movement resulted in the relative uplift of the southwestern and northwestern parts of the Puguang structure, which significantly changed the structural configuration. Based on the paleo-structure discussed in this article, the most probable migration directions of paleo-oil were from the northwest to the southeast and from the southwest to the northeast. Consequently, the evolution history of the Puguang gas field can be divided into three stages, namely,oil charging （200-170 Ma）, cracking oil to gas （155-120 Ma）, and gas pool adjustment （12-0 Ma）.

关键词： solid bitumen paleo-oil-water contact present-day gas-water contact Puguang gas field

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reserve and Pressure Change of Paleo-oil Reservoir in Puguang Area, Sichuan Basin

引用

Journal of China University of Geosciences 2008年第6期19卷 726-738页

作者：张元春邹华耀王存武李平平 state key laboratory of petroleum resource and prospecting China University of Petroleum CNOOC research center

The Puguang （普光） gas field is the largest gas field found in marine carbonates in China. The Feixianguan （飞仙关） and Changxing （长兴） reservoirs are two such reservoirs that had been buried to a depth of about 7 000 m and experienced maximum temperature of up to 220 ℃ before uplift to the present-day depth of 5 000-5 500 m, with present-day thermal maturity between 2.0% and 3.0% equivalent vitrinite reflectance （Ro）. Bitumen staining is ubiquitous throughout the Feixianguan and Changxing formations, with the greatest concentrations in zones with the highest porosity and permeability, suggesting that the solid bitumen is the result of in-situ cracking of oil. According to the distribution of bitumen in the core, the paleo-oil boundary can be approximately determined. The paleo-oil resource is calculated to be about （0.61-0.92） × 10^9 t （average 0.76 × 10^9 t）, and the cracked gas volume is about （380.80-595.80） × 10^9 m^3 （average 488.30 × 10^9 m^3）; at least 58.74% of cracked gas is preserved in Puguang gas field. The study area experienced not only the cracking of oil but also thermochemical sulfate reduction, resulting in large quantities of nonhydrocarbon gas, with about 15.2% H2S and 8.3% CO2, together with the structural reconfiguration. During the whole process, the great change of volume and pressure compels the PVTsim modeling software to simulate various factors, such as the cracking of oil, the thermochemical sulfate reduction （TSR） and the tectonic uplift in both isolated and open geological conditions, respectively. The results show that although any one of these factors may induce greater pressure changes in an isolated system than in a closed system, the oil cracking and C3＋ involving TSR lead to overpressure during the early stage of gas reservoir. Therefore, the tectonic uplift and the methane-dominated TSR, as well as the semi-open system contribute to the reducing pressure resulting in the current normal formation pressure.

关键词： Puguang gas field paleo-oil reservoir pressure change PVT simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reversible adhesion surface coating proppant

引用

Chinese Chemical Letters 2021年第1期32卷 553-556页

作者： Quan Xu Fan Fan Zhaohui Lu Mao Sheng Shouceng Tian Ye Zhang Linhua Pan Yang Zhou state key laboratory of petroleum resources and prospecting Beijing Key Laboratory of Biogas Upgrading UtilizationHarvard SEAS-CUPB Joint Laboratory on Petroleum ScienceChina University of Petroleum(Beijing)Beijing 102249China National Joint Engineering research center for shale gas Exploration and Development Chongqing Institute of Geology and Mineral ResourcesChongqing 401120China

Proppant is a key material in the hydraulic fracturing process,which has been widely used in unconventional oil *** proppants are easy to sedimentate and accumulate at the entrance of shale fracture,which will block the diversion of water,oil and *** proppants(CPs) are fabricated by coating resin on normal ceramic proppants through a simple method,which is dramatically enhanced the supporting properties in shale fracture and easy to scale *** with uncoated ceramic proppants,the self-suspension ability of CPs is ~11 times higher,which are able to migrate and distribute farther and deeper inside the *** the same time,Coating enhanced the 23.7% of adhesive force in maximum,which makes the CPs easier to adhere on the fracture surface to supportthe shale ***,the liquid conductivity of CPs is 60% higher than uncoated ceramic proppants at13.6 MPa *** method is expected to fabricated varieties of proppantsfor shale fracture supporting to improve the exploration of unconventional oil and gas resources.

关键词： Self-suspension Coating Proppants Hydraulic fracturing process Liquid conductivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Closure temperature of(U-Th)/He system in apatite obtained from natural drillhole samples in the Tarim basin and its geological significance

引用

Chinese Science Bulletin 2012年第23期57卷 3482-3490页

作者： CHANG Jian QIU NanSheng state key laboratory of petroleum resource and prospecting China University of PetroleumBeijing 102249China Basin and Reservoir research center China University of PetroleumBeijing 102249China

The apatite(U-Th)/He thermochronometry has been used to study the tectono-thermal evolution of mountains and sedimentary basins for over ten *** closure temperature of helium is important for the apatite(U-Th)/He thermochronometry and has been widely studied by thermal simulation *** this paper,the apatite He closure temperature was studied by establishing the evolutionary pattern between apatite He ages and apatite burial depth based on examined apatite He ages of natural samples obtained from drillholes in the Tarim basin,*** study showed that the apatite He closure temperature of natural samples in the Tarim basin is approximately 88±5℃,higher than the result(～75℃) obtained from the thermal simulation *** high He closure temperature resulted from high effective uranium concentration,long-term radiation damage accumulation,and sufficient particle *** study is a reevaluation of the conventional apatite He closure temperature and has a great significance in studying the uplifting events in the late period of the basin-mountain tectonic evolution,of which the uplifting time and rates can be determined accurately.

关键词：塔里木盆地封闭温度磷灰石地质意义钻孔热模拟实验样本自然

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation Indexes for High Quality shale Reservoir of Lower Silurian Longmaxi Formation in Southeast chongqing

引用

Acta Geologica Sinica(English Edition) 2015年第A1期89卷 127-129页

作者： YUE Feng CHENG Lijun key laboratory of shale gas Exploration Ministry of Land and Resources Chongqing Institute of Geology and MineralResources Chongqing 400042 China chongqing Engineering research center for shale gas resource & Exploration Chongqing Institute of Geology andMineral Resources Chongqing 400042 China chongqing shale gas research center of state key laboratory of petroleum resource and prospecting Chongqing400042 China

1 Introduction High quality shale reservoirs are considered eco- nomically recoverable. Determination of evaluation indexes for high quality shale reservoirs is crucial to shale gas exploration and exploitation in Chi... 详细信息

关键词： shale gas reservoirs NATURAL gas -- prospecting POROSITY PERMEABILITY GEOLOGY

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Noise Suppression for Micro-seismic on gas shale

引用

Acta Geologica Sinica(English Edition) 2015年第A1期89卷 367-368页

作者： XIE Qingming LI Dahua CHENG Lijun WANG Fei HUANG Zhenhua WANG Dayuan key laboratory of shale gas Exploration Ministry of Land and Resources Chongqing Institute of Geology and MineralResources Chongqing 400042 chongqing Engineering research center for shale gas resource & Exploration Chongqing Institute of Geology andMineral Resources Chongqing 400042 chongqing shale gas research Centre of state key laboratory of petroleum resource and prospecting ChongqingInstitute of Geology and Mineral Resources Chongqing 400042

1 Introduction gas shale reservoirs have the characteristics with low porosity and permeability, no air-water interface, self- storage, a large area of continuous accumulation, etc. With monitoring the hydraulic fracturing of gas shale reservoir, some key results, fracture direction, distribution, and other geometric features （crack length, width and height）, etc., would be forecasted with micro-seismic data produced by rock fracture. It provides real-time, accurate information for reservoir stimulation.

关键词： gas reservoirs OIL shales ROCK noise MICROSEISMS HYDRAULIC structures shale gas ALGORITHMS

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Episodic fluid movements in superimposed basin:Combined evidence from outcrop and fluid inclusions of the Majiang ancient oil reservoir,Guizhou Province

引用

Science China Earth Sciences 2008年第S2期51卷 78-87页

作者： XIANG CaiFu1,2,TANG LiangJie1,2,LI RuFeng1,2 & PANG XiongQi1,2 1 Basin and Reservoir research center,China University of petroleum,Beijing 102249,China 2 state key laboratory of petroleum resource and prospecting,China University of petroleum,Beijing 102249,China Basin and Reservoir research center China University of Petroleum Beijing China state key laboratory of petroleum resource and prospecting China University of Petroleum Beijing China

Combined evidence from the outcrop and the fluid inclusion assemblage (FIA) analysis indicates that there exist two episodes of fluid flow controlled by the tectonic activity. The first episode was recorded mainly in the reservoir rock of the Honghuayuan Formation,representing the fluid flow of hydrocarbon charging. The second episode occurred mainly along the fault systems,representing the fluid move-ment when the ancient oil reservoir was destroyed. The host mineral morphology,homogeneous tem-perature,and salinity of the FIAs record an episodic fluid movement. Characters of high homogenous temperature,low salinity and a quick temperature variation of the first episode fluid flow may indicate an early-stage fluid eruption,and correspondingly,fine-grained calcite was formed. Temperature of the erupted fluid tended to decrease during its mixing with the upper formation fluid and finally had the same temperature as the upper formation. From then on,the temperature was rather steady and fa-vored the growth of the coarse calcite. Due to this character of the temperature variation of the episodic fluid flow,we can use the homogenous temperature of the FIA of the coarse calcite to date the forma-tion and the destruction time of the Majiang ancient oil reservoir. Episodic fluid flow was known for its inhomogeneous trapping,which resulted in the failure of dating according to the burial history. But taking a close look at its temperature variation,we think that the latest stage of fluid flow,characterized by steady state temperature and grow of the coarser crystals,can be used for dating. It will be of great value if this method is proved to be effective. The formation and the destruction time of the Majiang ancient oil reservoir were dated to be in the Indosinian Period and the late Yanshan-early Hymalayan Period respectively. This conclusion is in great discrepancy with the common accepted idea that the Majiang ancient oil reservoir was formed and destroyed during the Cal

关键词： Majiang ancient oil reservoir episodic fluid flow marine carbonate rocks superimposed basin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pre-stack Simultaneous AVO Inversion and Lithology Prediction of shale gas Reservoir

引用

Acta Geologica Sinica(English Edition) 2015年第A1期89卷 359-360页

作者： WANG Fei CHENG Lijun XIE Qingming HUANG Zhenhua key laboratory of shale gas Exploration Ministry of Land and Resources Chongqing Institute of Geology and MineralResources Chongqing 400042 China chongqing Engineering research center for shale gas resource & Exploration Chongqing Institute of Geology andMineral Resources Chongqing 400042 China chongqing shale gas research center of state key laboratory of petroleum resource and prospecting ChongqingInstitute of Geology and Mineral Resources Chongqing 400042 China

shale gas is mainly gathered in shale in adsorbed and in free forms . shale gas reservoirs have the characteristics of self-generating and self-preserving, low density, low porosity and low permeability, which make th... 详细信息

关键词： shale gas reservoirs OIL shales PETROLOGY SEISMIC prospecting OIL well drilling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fault Systems and Their Mechanisms of the Formation and Distribution of the Tarim Basin,NW China

引用

Journal of Earth Science 2014年第1期25卷 169-182页

作者： Liangjie Tang Taizhu Huang Haijun Qiu Guimei Wan Meng Li Yong Yang Daqing Xie Gang Chen state key laboratory of petroleum resources and prospecting China University of Petroleum Basin & Reservoir research center China University of Petroleum Northwest Oilfield Company SINOPEC Oil and gas resources Strategic research center

This article aims to analyze the main controlling factors of development, distribution and evolution of the fault systems in the Tarim Basin. Based on the seismic profile interpretation, compre- hensive analysis of the drilling and geologic data, six fault systems maybe recognized in the Tarim Basin, they are the foreland fault system of the South Tianshan Mountain, the northern Tarim uplift fault sys- tem, North Tarim depression fault system, central fault system, Southwest Tarim fault system, and Southeast Tarim fault system. It is indicated that the main differences exist at the development, evolu- tion and distribution of the fault systems in the Tarim Basin. The sub-fault systems can be recognized according to the differences of the fault development and distribution in the interior of the fault system. It is characterized that the multi-level differential development and distribution of the fault systems ex- ist in the Tarim Basin. The fault belt developed in the Paleozoic strata mainly distribute at the pa- leo-uplift and paleo-slope in the interior of the Tarim Basin, and the fault belt occurred in the Meso-Cenozoic beds mainly develop at the peripheral foreland depressions. Zonal and segment differ- ential development and distribution of the fault systems also exist in the Tarim Basin. The formation and distribution of the Tarim fault systems is of complex controlling mechanisms. Poly-phase structural movement and tectonic transition controls the multi-phase differential development and distribution of the fault systems in the Tarim Basin. Multi-level differential development and distribution is controlled by multi-level detachment belt and regional unconformities. Zonal and segment differential develop- ment and distribution of the Tarim fault systems maybe controlled by pre-existed basement structural texture. The major direction of the fault systems in the Tarim Basin is controlled by the later stage basin-mountain coupling.

关键词： fault system differential tectonic movement detachment belt geodynamic mechanism Tarim Basin.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：