天然气地质学

塔巴庙地区上古生界低渗透储层构造裂缝及其分布定量预测

展开
  • 中国地质科学院地质力学研究所,北京 100081
周新桂(1966-),男,河南娄底市人,博士,副研究员.主要从事石油地质、构造地质、地应力等方面的研究工作.

收稿日期: 2005-06-16

  修回日期: 2005-08-12

  网络出版日期: 2005-10-20

基金资助

中石化华北分公司项目“鄂北塔巴庙地区构造应力场、裂缝系统定量预测及天然气有利靶区评价”(编号:P02077-2)资助.

BASIC CHARACTERISTICS AND QUANTITATIVE PREDICTION OF NATURALFRACTURE SYSTEM IN THE UPPER PALEOZOIC TIGHT SAND RESERVOIRS IN TABAMIAO AREA, NORTH ORDOS BASIN

Expand
  • Institute of Geomechnics, CAGS, Beijing 100081, China

Received date: 2005-06-16

  Revised date: 2005-08-12

  Online published: 2005-10-20

摘要

塔巴庙地区位于鄂尔多斯盆地北部伊陕斜坡构造带上,构造平缓,地层倾角仅1°左右,一般认为不具备裂缝发育条件。指出,由大量钻孔岩心观察、薄片分析、测井及试井等资料证实,研究区发育以垂直或高角度裂缝为主的区域性分布的构造裂缝系统,其次为与地层局部挠曲变形有关的低角度构造裂缝系统。根据裂缝几何学、运动学和动力学特征,以及区域裂缝系统的成因及其在天然气运移聚集中的作用,在实测古应力和岩石力学性质基础上,采用三维构造裂缝预测模拟技术,对研究区主要目的层盒2+3段裂缝发育程度和发育规律进行了合理预测评价。

本文引用格式

周新桂;张林炎; . 塔巴庙地区上古生界低渗透储层构造裂缝及其分布定量预测[J]. 天然气地球科学, 2005 , 16(5) : 575 -580 . DOI: 10.11764/j.issn.1672-1926.2005.05.575

Abstract

It is very hard to explore and develop the Upper Paleozoic low pressure tight sand gas reservoir effectively in north ordos basin. However, the existence of natural fractures in tight gas sand will change the situation dramatically by providing good conditions for gas migration and accumulation. The Tabamiao block is located in the north of ordos basin, and its tectonic setting is monoclinal structure, which stratigraphic dip is only 1 degree and is not commonly deemed good conditions for natural fracture growth. However, many vertical fractures and high-angle fractures have been found through core analysis and thin-section analysis as well as well testing and imaging logging interpretation. Further investigation in building the tectonic fracture system has been conducted on the drilling cores with paleomagnetic method and sound wave imaging technology. The result reveals that the NWW-EW oriented tectonic fractures are primary, the NEE, NE and  NW NNW-SE ones are subsidiary, respectively. The local and regional fractures,which are respectively related to flexibility deformation and regional stress field, are two types of natural fractures in Tabamiao area. Based on the analysis of tectonic fractures/geometry, kinematics and dynamics, and the causes of formation of regional fracture system and its major function of gas migration and accumulation, we properly predict and evaluate the fracture distribution law and development degree for major layer(He 2+3 segment)in this area by use of detailed three-dimensions fracture predictive simulation methods. It makes clear that a majority of high producing gas wells in this area are commendably corresponding to predictive fracture development regions.

 

参考文献

[1]张福礼.鄂尔多斯盆地早古生代复合的古构造体系与天然气[J]. 地质力学学报,2002,8(3):193-200
[2]张抗鄂尔多斯断块构造和资源[M].西安:陕西科学技术出版社,1989
[3]李振宏,郑聪斌.鄂尔多斯盆地东部奥陶系储层特征及控制因素[J].天然气地球科学,2004,15(6):604-609.
[4]张泓鄂尔多斯盆地中新生代构造应力场[J].华北地质矿产杂志,1996,11(1):87-92
[5] 曾联波,郑聪斌.陕甘宁盆地延长组区域裂缝的形成及其油气地质意义[J].中国区域地质,1999,18(4):391-396
[6] Lorenz J C, Lawrence W T, Warpinski N R. Regional fracture 1:A mechanism for the formation of regional fracture at depth in flat-lying reservoirs[J]. AAPG Bull,1991,75(11):1714-1737.
[7]周新桂,邓宏文,操成杰,等.储层构造裂缝定量预测研究及评价方法[J].地球学报,2003,24(2):175-180.
[8] 周新桂,操成杰,袁嘉音.储层构造裂缝定量预测与油气渗流规律研究现状和进展[J].地球科学进展,2003,18(3):398-404.
[9] 周新桂,孙宝珊.辽河张强凹陷科尔康油田储层裂隙预测研究[J].地质力学学报,1998,4(3):70-75.
[10] 周新桂,张利容,张明利,等.辽河欢喜岭油田中潜山带成藏期应力场及裂缝分布规律研究[J].新疆石油地质,2003,24(1):50-54.

文章导航

/