千米桥潜山凝析气藏勘探开发难点与对策分析
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摘要
开采实践说明千米桥潜山凝析气藏存在严重的非均质性。从地质角度来看,落实潜山顶面精细构造形态、搞清奥陶系内幕构造成因和样式、描述和评价潜山碳酸盐岩储层、查明气藏类型和分布及其连通性问题是千米桥潜山凝析气藏当前勘探开发工作的主要难点。为此建议:①采用速度各向异性的选前深度成像开展地震解释方法攻关;②应用露头区构造模拟方法深入研究潜山内幕构造成因及形成时限;③采用新技术精细表征裂缝性储层;④建立准确的地质模型,搞好适合岩溶储层特点的地震储层预测;⑤强化多学科综合研究,准确判定气藏类型及分布特征。
The development effect of Qianmiqiao buried hill condensated gas reservoir shows that it is with serious heterogeneity. Thus the current difficult issues for exploration and development mainly lie in the aspects such as analyzing and detailedly defining the top surface structure of the buried hill from the geological view in order to get full and clear understanding of the structure genesis and style inside Ordovician, carrying out researches like the reservoir description and evaluation of buried hill carbonate rocks, the gas reservoir type, distribution as well as connectivity. In this paper the author puts forward the countermeasures as follows: carry out seismic explanation to solve the problems by adopting prestack depth imagining of velocity anisotropy, apply the structure simulation from outcrop areas to study the buried hill internal structure genesis and determine its forming time span, positively use new technology to thoroughly describe the fracturing reservoir; establish correct geological model to complete the seismic reservoir prediction agreed with the karst reservoirs; strengthen the comprehensive research integrated with multi-disciplines, and judge the gas reservoir type and distribution characteristics accurately.
The development effect of Qianmiqiao buried hill condensated gas reservoir shows that it is with serious heterogeneity. Thus the current difficult issues for exploration and development mainly lie in the aspects such as analyzing and detailedly defining the top surface structure of the buried hill from the geological view in order to get full and clear understanding of the structure genesis and style inside Ordovician, carrying out researches like the reservoir description and evaluation of buried hill carbonate rocks, the gas reservoir type, distribution as well as connectivity. In this paper the author puts forward the countermeasures as follows: carry out seismic explanation to solve the problems by adopting prestack depth imagining of velocity anisotropy, apply the structure simulation from outcrop areas to study the buried hill internal structure genesis and determine its forming time span, positively use new technology to thoroughly describe the fracturing reservoir; establish correct geological model to complete the seismic reservoir prediction agreed with the karst reservoirs; strengthen the comprehensive research integrated with multi-disciplines, and judge the gas reservoir type and distribution characteristics accurately.
引文
① 漆家福,王子煜,童亨茂.渤海湾盆地北部潜山构造研究.2000
[1] 吴永平,杨池银,廖前进,等.黄骅坳陷深层油气藏形成条件与勘探潜力[A].见:谯汉生主编.中国东部深层石油勘探论文集[C].北京:石油工业出版社,2001． 110-152．
[2] 吴李泉,郑玉梅,曹代勇,等.千米桥潜山构造特征及其在油气成藏中的作用[J].石油勘探与开发,2002,29(4) :38-40．
[3] 吴永平,付立新,杨地银,等.黄骅坳陷中生代构造演化对潜山油气成藏的影响[J].石油学报,2002,23(2) :16-21．
[4] 宋鸿林,葛夏春.从构造特征论北京西山的印支运动[J].地质论评,1984． 30(1) :77-80．
[5] 杨农,陈正东,雷伟志,等.冀北燕山地区印支期构造特征研究[M].北京:地质出版社,1996．
[6] 周新文.华北克拉通印支运动及其与早中生代盆地发育的关系[J].地球科学--中国地质大学学报,1996,21(4) :449-454．
[7] 马振芳,周树勋,于忠平,等.鄂尔多斯盆地中东部前石炭纪古岩溶地貌与天然气富集研究[A].见:宋岩主编.天然气地质研究及应用[C].北京:石油工业出版社,2000． 32-36．
[8] 周兴熙.再论网络状油气藏与轮南潜山勘探对策[J].石油勘探与开发,2002,29(4) :4-7．
[9] 杨池银.板桥凹陷深层天然气气源对比与成因分析[J].天然气地球科学,2003,14(1) :47-52．
[10] 杨池银.千米桥潜山凝析气藏成藏其次研究[J].天然气地球科学,2003,14(3) :181-185．
[11] 吴永平,杨池银.渤海湾盆地北部奥陶系潜山[M].北京:地质出版社,2002,316-320．
[12] Grech M K, Cheadle S, Lawton D C. Integrating borehole information and surface seismic for velocity anisotropy analysis and depth imaging[J]. Leading Edge, 2001, 20(5) :519-523．
[13] Hawkins K, Leggott R, Williams G. Addressing anisotropy in 3-D prestack depth migration: A case study from Southern North Sea[J]. Leading Edge, 2001, 20(5) : 528-535．
[14] Bakulin A. Estimation of azimuthal anisotropy and fracture parameters from multiazimuthal walkaway VSP in the presence of lateral heterogeneity [A]. 70th Ann Int SEG Mtg, 2000． 1405-1408．
[15] Li Xiangyang. Fracture detection using azimuthal variation of P-wave move out from orthogonal seismic survey lines [J].Geophysics, 1999, 64(4) : 1193-1201．
[16] Bates C R, Lynn H B, Simon M. The study of a naturally fractured gas reservoir using seismic techniques [J]. AAPG Bulletin, 1999, 83 (9) : 1392-1407．
[17] 袁志祥.鄂尔多斯盆地塔巴庙地区奥陶系风化壳岩溶地震相特征与天然气勘探[J].天然气工业,2001,21(3) :1-5．
[18] 卫延召,冯江,宋海明,等.陕甘宁盆地鄂托克前旗地区奥陶系风化壳的地震正演模型[J].沉积学报,1999,17(增):734-741．
[1] 吴永平,杨池银,廖前进,等.黄骅坳陷深层油气藏形成条件与勘探潜力[A].见:谯汉生主编.中国东部深层石油勘探论文集[C].北京:石油工业出版社,2001． 110-152．
[2] 吴李泉,郑玉梅,曹代勇,等.千米桥潜山构造特征及其在油气成藏中的作用[J].石油勘探与开发,2002,29(4) :38-40．
[3] 吴永平,付立新,杨地银,等.黄骅坳陷中生代构造演化对潜山油气成藏的影响[J].石油学报,2002,23(2) :16-21．
[4] 宋鸿林,葛夏春.从构造特征论北京西山的印支运动[J].地质论评,1984． 30(1) :77-80．
[5] 杨农,陈正东,雷伟志,等.冀北燕山地区印支期构造特征研究[M].北京:地质出版社,1996．
[6] 周新文.华北克拉通印支运动及其与早中生代盆地发育的关系[J].地球科学--中国地质大学学报,1996,21(4) :449-454．
[7] 马振芳,周树勋,于忠平,等.鄂尔多斯盆地中东部前石炭纪古岩溶地貌与天然气富集研究[A].见:宋岩主编.天然气地质研究及应用[C].北京:石油工业出版社,2000． 32-36．
[8] 周兴熙.再论网络状油气藏与轮南潜山勘探对策[J].石油勘探与开发,2002,29(4) :4-7．
[9] 杨池银.板桥凹陷深层天然气气源对比与成因分析[J].天然气地球科学,2003,14(1) :47-52．
[10] 杨池银.千米桥潜山凝析气藏成藏其次研究[J].天然气地球科学,2003,14(3) :181-185．
[11] 吴永平,杨池银.渤海湾盆地北部奥陶系潜山[M].北京:地质出版社,2002,316-320．
[12] Grech M K, Cheadle S, Lawton D C. Integrating borehole information and surface seismic for velocity anisotropy analysis and depth imaging[J]. Leading Edge, 2001, 20(5) :519-523．
[13] Hawkins K, Leggott R, Williams G. Addressing anisotropy in 3-D prestack depth migration: A case study from Southern North Sea[J]. Leading Edge, 2001, 20(5) : 528-535．
[14] Bakulin A. Estimation of azimuthal anisotropy and fracture parameters from multiazimuthal walkaway VSP in the presence of lateral heterogeneity [A]. 70th Ann Int SEG Mtg, 2000． 1405-1408．
[15] Li Xiangyang. Fracture detection using azimuthal variation of P-wave move out from orthogonal seismic survey lines [J].Geophysics, 1999, 64(4) : 1193-1201．
[16] Bates C R, Lynn H B, Simon M. The study of a naturally fractured gas reservoir using seismic techniques [J]. AAPG Bulletin, 1999, 83 (9) : 1392-1407．
[17] 袁志祥.鄂尔多斯盆地塔巴庙地区奥陶系风化壳岩溶地震相特征与天然气勘探[J].天然气工业,2001,21(3) :1-5．
[18] 卫延召,冯江,宋海明,等.陕甘宁盆地鄂托克前旗地区奥陶系风化壳的地震正演模型[J].沉积学报,1999,17(增):734-741．
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