Characteristics of overpressure and its geological significance for hydrocarbon of Qingshankou Formation in southern Fuxin Uplift，Songliao Basin
Received date: 2017-05-25
Revised date: 2017-06-24
Online published: 2017-07-10
Overpressure is common in Qingshankou Formation of southern Fuxin Uplift and is closely related to hydrocarbon accumulation for underlying reservoirs below Qingshankou source rocks.Based on data from cutting logging，drilling，well logging and laboratory analysis，the causes，spatial distribution and controlling factors of overpressure in Qingshankou in southern Fuxin Uplift have been studied combined with burial history and hydrocarbon generation history.The results show that overpressure is mainly distributed in K2qn1 and K2qn2 of Qingshankou Formation and is obviously controlled by strata.The overpressure layer is characterized by high acoustic transit time，low density and low resistivity.The overpressure is contributed by both disequilibrium compaction and hydrocarbon generation and possesses binary genesis characteristics in lower slope zone，while in upper slope zone，it is dominated by disequilibrium compaction and possesses single genesis characteristics.The pore pressure profile of single well is bell-shaped and both pressure coefficients and excessive pressure increase with depth.Longitudinally，pressure coefficients of K2qn2 range from 1.2 to 1.65 and excessive pressure ranges from 2.5 to 9 MPa，which suggests low- and medium-intensity overpressure.Whereas pressure coefficients of K2qn1 range from 1.5 to 1.85 and excessive pressure ranges from 4.5 to 11 MPa，which is characterized by medium- and high-intensity overpressure.And the extremum of overpressure occurs in the K2qn1 Formation.On the plane，the intensity of overpressure decreases with the decrease of the buried depth from the Changling Sag to the Fuxin Uplift and the intensity of overpressure in the lower slope zone is apparently higher than that in the upper slope zone.And the high-value center of excessive pressure is mainly concentrated in Well R48 fields，Well R39 fields and Well R26-1 fields.The overpressure distribution of Qingshankou Formation displays strong heterogeneity，which is mainly controlled by depositional rate，thickness and quality of dark mudstone，burial depth and opening/closing property of faults.The study of overpressure characteristics can promote the understanding of hydrocarbon migration and accumulation in Fuyu oil layer and have a great significance on evaluating sealing capability of caprock in southern Fuxin Uplift.
Ren Li-hua，Dai Jun-jie，Lin Cheng-yan，Cao Zheng . Characteristics of overpressure and its geological significance for hydrocarbon of Qingshankou Formation in southern Fuxin Uplift，Songliao Basin[J]. Natural Gas Geoscience, 2017 , 28(7) : 1020 -1030 . DOI: 10.11764/j.issn.1672-1926.2017.06.017
[1]Hunt J M.Generation and migration of petroleum from abnormally pressured fluid compartments[J].AAPG Bulletin，1990，74(1)：1-12.
[2]Liu Jingdong，Jiang Youlu.Relationship between abnormally high pressure and hydrocarbon of the Paleogene reservoirs in the northern part of central uplift，Dongpu Sag，Bohai Bay Basin[J].Natural Gas Industry，2012，32(2)：30-36.[刘景东，蒋有录.东濮凹陷中央隆起带北部古近系异常高压与油气成藏的关系[J].天然气工业，2012，32(12)：30-36.]
[3]Jiang Youlu，Wang Xin，Yu Qianqian，et al.Pressure field characteristics of petroliferous depressions and its relationship with hydrocarbon enrichment in Bohai Bay Basin[J].Acta Petrolei Sinica，2016，37(11)：1361-1369.[蒋有录，王鑫，于倩倩，等.渤海湾盆地含油气凹陷压力场特征及与油气富集关系[J].石油学报，2016，37(11)：1361-1369.]
[4]Zha Ming，Qu Jiangxiu，Zhang Weihai.The relationship between overpressure and reservoir forming mechanism[J].Petroleum Exploration and Development，2002，29(1)：19-23.[查明，曲江秀，张卫海.异常高压与油气成藏机理[J].石油勘探与开发，2002，29(1)：19-23.]
[5]Fu Guang，Lü Yanfang，Yang Mian.Quantitative study on abnormal pore fluid pressure in undercompacted mudstone[J].Xinjiang Petroleum Geology，2002，23(4)：295-298.[付广，吕延防，杨勉.欠压实泥岩异常孔隙流体压力的定量研究[J].新疆石油地质，2002，23(4)：295-298.]
[6]Xiang Caifu，Feng Zhiqiang，Wu Heyong，et al.Three abnormal pressure systems developed in the Songliao Basin，northeast China and their genesis[J].Acta Geological Sinica，2006，80(11)：1752-1759.[向才富，冯志强，吴河勇，等.松辽盆地异常压力系统及其形成原因探讨[J].地质学报，2006，80(11)：1752-1759.]
[7]Fu Guang，Sun Kezhi，Song Guowei.Difference of formation and evolution of overpressure of K1qn1 mudstone east and west of Daqing placanticline[J].Journal of Daqing Petroleum Institute，2008，32(5)：1-4.[付广，孙克智，宋国微.大庆长垣东西两侧青一段泥岩超压形成与演化的差异性[J].大庆石油学院学报，2008，32(5)：1-4.]
[8]Lei Zhenyu，Xie Xinong，Huang Wei，et al.Abnormal pressure system characteristics of mid-shallow formation in Qijiagulong-Sanzhao Depression of Songliao Basin，China[J].Journal of Jilin University：Earth Science Edition，2012，42(supplement 1)：96-104.[雷振宇，解习农，黄卫，等.松辽盆地齐家古龙凹陷—三肇凹陷中浅层异常压力系统特征[J].吉林大学学报：地球科学版，2012，42(增刊1)：96-104.]
[9][KG*5/6]Liu Zongbao，Fu Xiaofei，Lv Yanfang，et al.Hydrocarbon reversed accumulation model of big depression syncline area：A case of the Fuyang reservoir in the Sanzhao Depression[J].Geological Review，2009，55(5)：685-692.[刘宗堡，付晓飞，吕延防，等.大型凹陷向斜区油气倒灌式成藏模式——以松辽盆地三肇凹陷扶杨油层为例[J].地质论评，2009，55(5)：685-692.]
[10]Feng Zhiqiang，Zhang Shun，Feng Zihui.Discovery of “Enveloping surface of oil and gas overpressure migration” in the Songliao Basin and its bearings on hydrocarbon migration and accumulation mechanisms[J].Science China:Earth Science，2011，41(12)：1872-1833.[冯志强，张顺，冯子辉.在松辽盆地发现“油气超压运移包络面”的意义及油气运移及成藏机理探讨[J].中国科学：地球科学，2011，41(12)：1872-1833.]
[11]Lei Zhenyu，Xie Xinong，Meng Yuanlin，et al.Effecting of overpressures on diagensis in the Qijiagulong-Sanzhao Depression of Songliao Basin[J].Earth Science:Journal of China University of Geosciences，2012，37(4)：833-842.[雷振宇，解习农，孟元林，等.松辽盆地齐家古龙—三肇凹陷超压对成岩作用的影响[J].地球科学:中国地质大学学报，2012，37(4)：833-842.]
[12]Tao Shizhen，Yuan Xuanjun，Hou Lianhua，et al.Play types，geologic characteristics and exploration domains of lithological reservoirs in China[J].Petroleum Exploration and Development，2016，43(6)：863-872.[陶士振，袁选俊，侯连华，等.中国岩性油气藏区带类型、地质特征与勘探领域[J].石油勘探与开发，2016，43(6)：863-872.]
[13]Li Dan，Dong Chunmei，Lin Chengyan，et al.Characteristic of overpressure and its control on migration and accumulation model for hydrocarbon reservoirs below source rocks in Rangzijing slope zone of southern Songliao Basin[J].Natural Gas Geoscience，2014，25(3)：326-332.[李丹，董春梅，林承焰，等.松辽盆地南部让字井斜坡带超压特征及其对源下油藏运聚模式的控制[J].天然气地球科学，2014，25(3)：326-332.]
[14]Wang Yongchun，Kang Weili，Mao Chaolin.Theories and Practices of Petroleum Exploration in Jilin Exploration Area[M].Beijing：Petroleum Industry Press，2007：1-51.[王永春，康伟力，毛超林，等.吉林探区油气勘探理论与实践[M].北京：石油工业出版社，2007：1-51.]
[15]Zhang Fengqi，Wang Zhenliang，Zhong Hongli，et al.Recognition model and contribution evaluation of main overpressure formation mechanisms in Sedimentary Basins[J].Natural Gas Geoscience，2013，24(6)：1151-1158.[张凤奇，王震亮，钟红利，等.沉积盆地主要超压成因机制识别模式及贡献[J].天然气地球科学，2013，24(6)：1151-1158.]
[16]Luo Xiaorong.The application of numerical basin modeling in geological studies[J].Petroleum Exploration and Development，2000，27(2)：6-10.[罗晓容.数值盆地模拟方法在地质研究中的应用[J].石油勘探与开发，2000，27(2)：6-10.]
[17]He Sheng，He Zhiliang，Yang Zhi，et al.Characteristics，well-log responses and mechanisms of overpressures within the Jurassic Formation in the central part of Junggar Basin[J].Earth Science:Journal of China University of Geosciences，2009，34(3)：457-470.[何生，何治亮，杨智，等.准噶尔盆地腹部侏罗系超压特征和测井响应以及成因[J].地球科学:中国地质大学学报，2009，34(3)：457-470.]
[18]Liu Hua，Zhang Fengrong，Jiang Youlu，et al.Characteristics and genetic mechanism of formation pressure in sags of Raoyang Depression[J].Journal of China University of Petroleum：Edition of Natural Science，2016，40(4)：37-46.[刘华，张丰荣，蒋有录，等.饶阳凹陷洼槽区地层压力特征及成因机制[J].中国石油大学学报:自然科学版，2016，40(4)：37-46.]
[19]Wang Lianjin，Ye Jiaren.A comment on forming mechanism of over pressure in sedimentary basins[J].Oil & Gas Geology，2001，22(1)：17-20.[王连进，叶加仁.沉积盆地超压形成机制述评[J].石油与天然气地质，2001，22(1)：17-20.]
[20]Guo Wei，Yu Wenxiang，Liu Zhaojun，et al.The burial history of the southern Songliao Basin[J].Journal of Jilin University:Earth Science Edition，2009，39(3)：353-360.[郭巍，于文祥，刘招君，等.松辽盆地南部埋藏史[J].吉林大学学报:地球科学版，2009，39(3)：353-360.]
[21]Lu Shuangfang，Li Jiaona，Liu Shaojun，et al.Oil generation threshold depth of Songliao Basin：Revision and its significance[J].Petroleum Exploration and Development，2009，36(2)：166-173.[卢双舫，李娇娜，刘绍军，等.松辽盆地生油门限重新厘定及其意义[J].石油勘探与开发，2009，36(2)：166-173.]
[22]Tingay M R P，Morley C K，Laird A，et al.Evidence for overpressure generation by kerogen-to-gas maturation in the northern Malay Basin[J].AAPG Bulletin，2013，97(4)：639-672.
[23]Jin Qiuyue，Gan Jun，Lu Mei，et al.Analysis of the causes of formation overpressure in the Chezhen Sag of Bohai Bay Basin[J].Journal of Northeast Petroleum University，2015，39(5)：32-40.[金秋月，甘军，卢梅，等.渤海湾盆地车镇凹陷地层超压成因[J].东北石油大学学报，2015，39(5)：32-40.]
[24]Xu Zhengjian，Liu Luofu，Wu Kangjun，et al.Characteristics of formation overpressure and its relationship with hydrocarbon accumulation in Chepaizi and its surrounding area of Junggar Basin[J].Journal of Central South University:Science and Technology，2015，46(10)：3848-3858.[徐正建，刘洛夫，吴康军，等.准噶尔盆地车排子周缘地层超压特征及其与油气成藏的关系[J].中南大学学报:自然科学版，2015，46(10)：3848-3858.]
[25]Wang Xin，Jiang Youlu，Cao Lanzhu，et al.Characteristics of paleopressure evolution and its influencing factors in sub-sags of hydrocarbon-bearing sag：A case study of Raoyang Sag in Jizhong Depression[J].Journal of China University of Mining & Technology，2017，46(3)：540-550.[王鑫，蒋有录，曹兰柱，等.富油凹陷洼槽区古压力演化特征及影响因素——以冀中坳陷饶阳凹陷为例[J].中国矿业大学学报，2017，46(3)：540-550.]
[26]Ma Wei，Wang Dongliang，Li Zhisheng，et al.A simulation experiment of pressurization during hydrocarbon generation from lacustrine source rocks[J].Acta Petrolei Sinca，2013，34(supplement 1)：65-69.[马卫，王东良，李志生，等.湖相烃源岩生烃增压模拟实验[J].石油学报，2013，34(增刊1)：65-69.]
[27]Cai Laixing，Lu Shuangfang，Huang Wenbiao，et al.Controlling function of overlying high-quality source rocks on above-generation and below-storage tight oil reservoir：Taking mudstone in Qn1 Formation at central depression in southern Songliao Basin as an instance[J].Journal of China University of Mining & Technology，2016，45(2)：280-292.[蔡来星，卢双舫，黄文彪，等.上覆优质源岩对上生下储式致密油成藏的控制作用——以松南中央坳陷区青一段泥岩为例[J].中国矿业大学学报，2016，45(2)：280-292.]
[28]Sun Yu，Chen Chen，Ma Shizhong，et al.Hydrocarbon migration mechanism and accumulation models of the Fuyu oil layer in southern Fuxin Uplift，Songliao Basin[J].Geological Review，2013，59(3)：501-509.[孙雨，陈晨，马世忠，等.松辽盆地扶新隆起带南部扶余油层油气运移机制与成藏模式研究[J].地质论评，2013，59(3)：501-509.]
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号