龙王庙组气藏X井区储层非均质性精细描述
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摘要
为了精细刻画安岳气田磨溪地区龙王庙组气藏储层的非均质性,以该储层X井区为例,在储层地质研究的基础上,综合运用静态描述、动态分析和数值试井技术精细刻画储层的滩体展布,定量描述储层的平面非均质性。研究结果表明:压力史拟合可有效地排除模型多解性,W36井和W71井附近为两区径向复合地层,W67井位于受顺层溶蚀控制的由中间向两端逐渐变宽的低渗长条带状小滩体上,通过两端开口与周围井相连通,X井区内W36井、W73井和W67井附近区域以及W69井和W70井附近区域有一定的连通性,而在条带状边界西至W69井、W70井、W71井的区域储量不易动用。该研究为开发技术政策的制订提供了依据。
In order to accurately characterize the reservoir heterogeneity of Longwangmiao Formation in Moxi of Anyue Gasfield,static and dynamic characterization,production performance analysis and numerical well test were comprehensively used to characterize the beach bar distribution and quantitatively describe the lateral reservoir heterogeneity on the basis of reservoir geology. Result indicates that production history fitting can effectively eliminate the model multiplicity. The vicinity of Well W36 and Well W71 is considered as radial composite stratum. The Well W67 is located in a low-permeability long strip-shaped small-scale shoal body which is gradually widened from the middle to the both ends and controlled by the bedding layer dissolution. This shoal body is connected to the surrounding well through the openings on the both ends. The Well 36 and Well 37 connect to the vicinities of Well 67,Well 69 and Well 70 to certain extent in the Wellblock X. The reserve in the area from the western strip boundary to the Well 69,Well 70 and Well 71 are difficult to produce. This research could provide certain reference for the technical policy optimization.
In order to accurately characterize the reservoir heterogeneity of Longwangmiao Formation in Moxi of Anyue Gasfield,static and dynamic characterization,production performance analysis and numerical well test were comprehensively used to characterize the beach bar distribution and quantitatively describe the lateral reservoir heterogeneity on the basis of reservoir geology. Result indicates that production history fitting can effectively eliminate the model multiplicity. The vicinity of Well W36 and Well W71 is considered as radial composite stratum. The Well W67 is located in a low-permeability long strip-shaped small-scale shoal body which is gradually widened from the middle to the both ends and controlled by the bedding layer dissolution. This shoal body is connected to the surrounding well through the openings on the both ends. The Well 36 and Well 37 connect to the vicinities of Well 67,Well 69 and Well 70 to certain extent in the Wellblock X. The reserve in the area from the western strip boundary to the Well 69,Well 70 and Well 71 are difficult to produce. This research could provide certain reference for the technical policy optimization.
引文
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[15]李熙喆,郭振华,万玉金,等.安岳气田龙王庙组气藏地质特征与开发技术对策[J].石油勘探与开发,2017,44(3):398-406.
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[17]金民东,曾伟,谭秀成,等.四川磨溪-高石梯地区龙王庙组滩控岩溶型储集层特征及控制因素[J].石油勘探与开发,2014,41(6):650-660.
[18]周进高,房超,季汉成,等.四川盆地下寒武统龙王庙组颗粒滩发育规律[J].天然气工业,2014,34(8):27-36.
[2]陈欢庆,王珏,杜宜静.储层非均质性研究方法进展[J].高校地质学报,2017,23(1):104-114.
[3]赵鹤森,陈义才,唐波,等.鄂尔多斯盆地定边地区长2储层非均质性研究[J].岩性油气藏,2011,23(4):70-74.
[4]于兴河.油气储层地质学基础[M].北京:石油工业出版社,2009:258-293.
[5]裘怿楠,许仕策,肖敬修.沉积方式与碎屑岩储层的层内非均质性[J].石油学报,1985,6(1):41-49.
[6]裘怿楠,钱凯.沉积与储层和油气藏[M].北京:石油工业出版社,1992:438-449.
[7]裘怿楠,薛叔浩,应凤祥,等.中国陆相油气储集层[M].北京:石油工业出版社,1997:223-365.
[8]刘曰武,陈慧新,张大为,等.存在邻井影响条件下的油井数值试井分析[J].油气采收率技术,2002,11(5):4-7.
[9]杨敏.塔河油田4区岩溶缝洞型碳酸盐岩储层井间连通性研究[J].新疆地质,2004,22(2):196-199.
[10]黄登峰,刘能强.数值试井在描述油气藏复杂边界中的应用[J].油气井测试,2006,15(6):18-19,73.
[11]姚军,吴明录,戴卫华,等.流线数值试井解释模型[J].石油学报,2006,27(3):96-99.
[12]刘磊,陈东,陈宝新,等.数值试井技术在大北102区块气藏认识的研究及应用[J].油气藏评价与开发,2018,8(1):29-33.
[13]余忠仁,杨雨,肖尧,等.安岳气田龙王庙组气藏高产井模式研究与生产实践[J].天然气工业,2016,36(9):69-78.
[14]姚根顺,周进高,邹伟宏,等.四川盆地下寒武统龙王庙组颗粒滩特征及分布规律[J].海相油气地质,2013,18(4):1-8.
[15]李熙喆,郭振华,万玉金,等.安岳气田龙王庙组气藏地质特征与开发技术对策[J].石油勘探与开发,2017,44(3):398-406.
[16]杨雪飞,王兴志,唐浩,等.四川盆地中部磨溪地区龙王庙组沉积微相研究[J].沉积学报,2015,33(5):973-981.
[17]金民东,曾伟,谭秀成,等.四川磨溪-高石梯地区龙王庙组滩控岩溶型储集层特征及控制因素[J].石油勘探与开发,2014,41(6):650-660.
[18]周进高,房超,季汉成,等.四川盆地下寒武统龙王庙组颗粒滩发育规律[J].天然气工业,2014,34(8):27-36.
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