Characteristics of stratigraphic structure and oil-gas-water distribution by logging data in Arys oilfield

Size: px

Start display at page:

Download "Characteristics of stratigraphic structure and oil-gas-water distribution by logging data in Arys oilfield"

Merilyn Roberts
5 years ago
Views:

1 GLOBAL GEOLOGY Vol. 31 No. 1 Mar P P A doi /j. issn Characteristics of stratigraphic structure and oil-gas-water distribution by logging data in Arys oilfield DU Xu-dong ZHAO Qi-hui ZHUANG Wei HAN Gui-qin WU Guo-hai Geosciences Center CNPC Greatwall Drilling Corporation Beijing China Abstract Analyzing the stratigraphic characteristics of the Arys oilfield and South Arys structure the authors identified four marker beds based on the logging data and considered that the Akshabluk Formation was distributed in a relatively stable conditions in Cretaceous and Late Jurassic which was used detailed comparison of geological characteristics in sublayers level. Meanwhile the authors considered that the Akshabluk Formation was unconformable with its underlying Kumker Formation which should be the residual formation of Middle-Lower Jurassic. Moreover the authors analyzed the stratigraphic relation of the corresponding layers of the South Arys structure which showed that the unconformity was existed between the Akshabluk Formation and Kumker Formation indicating the fact of unconformity between the Akshabluk Formation and its underlying Jurassic strata in Arys oilfield. On the basis of the recognition of unconformable relationship the reservoirs of the Arys oilfield in Lower Jurassic were the multiple stratigraphic unconformity reservoirs in type. Present oil wells of the basement were independent reservoirs controlled by paleo-uplift. Key words Arys oilfield formation correlation well logging data unconformity oil-gas-water distribution CNPC 2008E-1603

2 Arys J 1 b J 1 s J 1 a J 2 d J 2 kr J 3 km U -1 J 3 ak U -0 U -0-0 U -0-1 U -0-2 U U K 1 nc1ar 1 Table 1 1 Stratigraphic sequence in the studied area K K 1 J J 3 J 3 ak U - 0 U - 0 U - 0 J 3 km U - 1 U - 1 U - 1 J J 1 b U - 1 J J 1 s J 1 a J c J b J a J 2 d J 2 kr J

3 ~ 4 m U Fig. 1 1 K 1 - J Standard stratigraphic profile of J -K 1 maker bed in Arys oilfield and its near structures

4 ~ 10 m U -0 U -1 U -0 U -1 U -1 U -1 U -1 U -1 U -0 U -1 U U -Ⅰ -0-0 U U -0-0 U ~ 120 m ~ 5 m m U m 2 m U -0 U -1 U -1 AR25 AR39 U ~ 20 m U -1 A14 -A6 -A7 -A45 U U -1 A45 A14 U -1 U ~ 29 m U -0 U -1 U -0-4 U -1 U -0 2 U -1 1 U -1 U -0-4 U -1 U -1Sand A ~

5 m U -1 Sand A14 3 U -1 A8 A9 U -1 U ~ 20 U -1 U -1 A14 U -1 U U -1Sand A6 U -1 Sand m A45 U -1 Sand U m Fig. 2 2 A14 -A6 -A7 -A45 Standard stratigraphic profile of wells A14 - A6 -A7 -A45 in Arys oilfield 2 UAR ~ 10 m

1 167 J 2 + 1 a J 1 + 2 b UAR1 2 6 J 2 + 1 c 3 J 2 + 1 c UAR1 6 J 1 + 2 b UAR6 3 UAR2 UAR3 UAR5 J 2 + 1 a 3 3 A43 -UAR5 -UAR3 -UAR2 -UAR1 -UAR6 Fig.

6 1 167 J a J b UAR1 2 6 J c 3 J c UAR1 6 J b UAR6 3 UAR2 UAR3 UAR5 J a 3 3 A43 -UAR5 -UAR3 -UAR2 -UAR1 -UAR6 Fig. 3 Stratigraphic correlation profile of wells A43 -UAR5 -UAR3 -UAR2 -UAR1 -UAR 6 UAR1 J b UAR1 5 J c UAR6 < 400 m 4 UAR1 UAR2 UAR1 UAR6 860 m 3 U -1 J U -1 A43 3 J a A6 A14 A ~ m UAR m

168 31 A14 1 428. 5 ~ 1 432. 5 m - 1 341. 4 m 4 2 U -1 A15 A14 7 U -1 A13 A16 A3-1 335. 2 m A45 U -1-1 335. 2 m 4 3 U -0 U -1 U -1 U -1 4 A14 1 428. 5 ~ 1 432. 5 m - 1 336. 9 m - 1 338. 9 m 4 Fig.

7 A ~ m m 4 2 U -1 A15 A14 7 U -1 A13 A16 A m A45 U m 4 3 U -0 U -1 U -1 U -1 4 A ~ m m m 4 Fig m A ~ m m A ~ m m U -0 U -1 4 A ~ m > 20 m 3 /d ~ m m Reservoir model in Arys oilfield 4 A A41 A39 A U -1 Table 2 2 U - 1 U -1 and basement reservoir types and their water-oil-gas contact in Arys oilfield U -1 J A3 A16 A m A m A m A m A m A23 A38 A21 A41 A39 A16

8 1 169 Fig. 5 5 A38 -A21 -A20 -A31 -A19 Basement reservoir profile of wells A38 -A21 -A20 -A31 -A19 in Arys oilfield 4 1. M TONG Xiao-guang XU Shu-bao. Atlas of petroleum exploration and development of the World M. Beijing U -0 U -1 Petroleum Industry Press U J KONG Xiang-yu YIN Jin-yin ZHANG Fa-qiang. Oilgas geological features and its exploration potential in South Turgay Basin Kazakhstan J. Lithologic Reservoirs J SUN Tie-jun LI Qing-hua. Research on the structure character in South Turgay Basin Kazakhstan J. Oil Geographic Respecting Suppl

9 J Moseley B A Tsimmer V A. Evaluation and hydrocarbon ZHANG Hong-bin KE Zong-qiang. Complex fault interpretation technology in South Turgay Basin Kazakhstan J. Oil Geographic Respecting Suppl Kyzykia stratigraphic data J. Petroleum Geology J. 7 / WANG Li TIAN Zuo-ji. Abstract and research on the multiple seismic distribution for metamorphic rock in South area of Kyzykia J. Oil Geographic Respecting habitat of the South Turgay Basin Kazakhstan J. Petroleum Geoscience Kuandykov B M Nazhmetdinov A S. Sapozhnikov R B. Structure of the deeply subsided sediments of the Aryskum depression of the South Turgay sub-basin based on seismic 9 HIS Energy Corporation. Geological and petroleum characters of the South Turgay Basin M. Houston HIS Energy Corporation J J. TIAN Zuo-ji XU Zhi-qiang ZHENG Jun-zhang et al Petroleum geology and accumulation in Aryskum depression in Turgay Basin J. Xinjiang Petroleum Geology KOU Shi FAN Zi-fei WANG Jiang et al. Fine reservoir description at Aleisi oilfield in Kazakhstan J. Oil Exploration in China

Main controlling factors of hydrocarbon accumulation in Sujiatun oilfield of Lishu rift and its regularity in enrichment

35 3 2016 9 GLOBAL GEOLOGY Vol. 35 No. 3 Sept. 2016 1004 5589 2016 03 0785 05 130062 P618. 130. 2 A doi 10. 3969 /j. issn. 1004-5589. 2016. 03. 019 Main controlling factors of hydrocarbon accumulation