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欠平衡钻水平井附加套管注气方式及关键技术

石油学报 2011年第2期32卷 350-354页

作者：杨虎王利国王峥王磊中国石油新疆油田公司勘探开发研究院重庆科技学院中国石油新疆油田公司石油工程监督中心

充气欠平衡钻井技术应用于水平井或大斜度井,将是拓展欠平衡钻井应用领域的重要方向之一。目前注气方式主要是钻柱注气和环空注气。采用钻柱注气方式,常规井下动力钻具和泥浆脉冲随钻测量工具无法正常工作,而现有的环空注气方式(如寄生... 详细信息

充气欠平衡钻井技术应用于水平井或大斜度井,将是拓展欠平衡钻井应用领域的重要方向之一。目前注气方式主要是钻柱注气和环空注气。采用钻柱注气方式,常规井下动力钻具和泥浆脉冲随钻测量工具无法正常工作,而现有的环空注气方式(如寄生套管、双层套管),由于成本高,技术问题多,应用不够广泛。由此,结合欠平衡钻井和水平井的理论和实践,提出了附加套管环空注气方式,并针对其关键技术进行理论分析和论证。该注气技术克服了钻柱注气的特殊问题,形成一套实用的环空注气欠平衡钻水平井技术。

关键词：欠平衡钻井水平井注气方式套管新型套管头

Controlling the uncertainty in reservoir stochastic simulation

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Petroleum Science 2010年第4期7卷 472-476页

作者： Cui Yong Chi Bo Chen Guo Ouyang Cheng Xia Bairu china University of Geosciences Beijing 100083 China Research Institute of Daqing oilfield company Ltd. Heilongjiang 163712 China Geological Exploration ＆ Development Research Institute PetroChina Chuanqing Drilling Engineering CompanyChengdu Sichuan 610051 China

Unexpected noise in reservoir stochastic simulation realization may be too high to make the realization useful, especially when there is a lack of hard data. Through discussing the uncertainties, we present two ways to control the uncertainty ratio that is brought by the algorithm of stochastic simulation. By reasonably reducing the random value of the stochastic simulation result, the unexpected values introduced by the residual that associates with random series can be controlled. Another way when the data disperse unevenly is to control the stochastic simulation order by grouping the points that need to be simulated to make those points which can be simulated by more neighborhood hard data calculated first. Both methods do not go against the core stochastic simulation algorithm.

关键词： Reservoir stochastic simulation hard data Kriging algorithm residual realization

吐哈盆地台北凹陷水西沟群致密砂岩气成藏条件

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天然气工业 2011年第7期31卷 21-23,103页

作者：范谭广中国石油吐哈油田公司勘探开发研究院

吐哈盆地台北凹陷侏罗系水西沟群钻探发现较大规模的致密砂岩气藏,迫切需要在该区开展天然气成藏条件研究,寻找有利勘探区域。为此,从烃源条件、储层特征及分布等方面分析了该区2套主力产层(下侏罗统三工河组和八道湾组)的成藏条件,结... 详细信息

吐哈盆地台北凹陷侏罗系水西沟群钻探发现较大规模的致密砂岩气藏,迫切需要在该区开展天然气成藏条件研究,寻找有利勘探区域。为此,从烃源条件、储层特征及分布等方面分析了该区2套主力产层(下侏罗统三工河组和八道湾组)的成藏条件,结果认为:①该区煤系烃源岩品质好、厚度大,生气强度大,富气条件优越;②储层分布稳定,厚度大,物性致密,常规气藏形成条件欠佳,但能形成致密砂岩气藏;③气藏类型为"先成型"致密砂岩气藏,存在2种不同的成藏模式。通过评价生烃强度、储层发育程度、源储配置关系等指标,划分出托克逊、苏巴什—连木沁等8个致密砂岩气有利勘探区域,其中的高渗透带及构造有利部位是"甜点"有利分布区,整体勘探潜力大。

关键词：致密砂岩气气藏特点烃源岩储集层特征早侏罗世成藏模式勘探方向吐哈盆地

Classification of carbonate gas condensate reservoirs using well test and production data analyses

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Petroleum Science 2011年第1期8卷 70-78页

作者： Li Yong Li Baozhu Hu Yongle Xia Jing Liu Zhaowei Deng Xingliang She Zhicheng Fan Kun Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083.China china National Oil ＆ Gas Exploration and Development Corporation PetroChinaBeijing 100034China tarim oilfield company PetroChinaKorlaXingjiang 841000China

Carbonate reservoir patterns play an important role in the production performance of oil and gas wells,and it is usually classified through static data analysis which cannot reflect the actual well *** paper takes the Tazhong No.1 gas field in the tarim Basin,china as an example to investigate the classification of carbonate *** classification method mainly combines well test analysis with production analysis—especially the Blasingame type curve *** on the characteristics of type curves for well test analysis and the Blasingame method,the relationship between the type curves and reservoir pattern was *** than 20 wells were analyzed and the reservoirs were classified into 3.major patterns with 7 ***,the classification results were validated by dynamic performance analysis of wells in the Tazhong No.1 gas *** the basis of the classification results,well stimulation（*** flooding in a single well） was carried out in three volatile-oil wells,and the oil recovery increased by up to 20%.

关键词： Carbonate reservoir pattern well test analysis production analysis type curve

Grains Containing Oil Inclusions in Different Hydrocarbon Production and Show Types of Sandstone Reservoirs from the Central Junggar Basin,Northwest china

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Acta Geologica Sinica(English Edition) 2011年第5期85卷 1163-1172页

作者： CAO Jian~1,WANG Xulong~2,SUN Ping’an~1,SHI Xinpu~2,HU Wenxuan~1,YAO Suping~1, ZHANG Yueqian~2,TANG Yong~2 and XIE Xiaomin~1 1 State Key Laboratory for Mineral Deposits Research,Department of Earth Sciences,Nanjing University, Nanjing,Jiangsu 210093.china 2 Petrochina xinjiang {3. company,Karamay,xinjiang 83.000,china State Key Laboratory for Mineral Deposits Research Department of Earth Sciences Nanjing University Nanjing Jiangsu 210093 China Petrochina xinjiang oilfield {3. Karamay Xinjiang 834000 China

The values of grains containing oil inclusions(GOI) in 120 reservoir sandstone samples from the central Junggar Basin of Northwest china were *** sandstones are characterized by different types of hydrocarbon production and *** values range from 0.015%to 19.9%,and show a fairly good correlation with the hydrocarbon production/shows,which are qualitatively suggestive of reservoir hydrocarbon abundance and petroleum ***,it may be implied that the values can reflect hydrocarbon migration,being not controlled mainly by the other influencing *** correlation between the values and the reservoir hydrocarbon production and show types indicates that the GOI method can be used in hydrocarbon migration study when the petroleum type of a reservoir is normal oil or gas alone,but it should be used with caution when light oil charges the reservoirs or a complex hydrocarbon migration event takes *** case study in the central Junggar Basin using the method presents some new understanding on hydrocarbon ***, the method may help to solve specific petroleum geological problems,and can be treated as a routine tool in hydrocarbon migration study.

关键词： grains containing oil inclusions(GOI) petroleum inclusion hydrocarbon migration reservoir geochemistry the central Junggar Basin

Hydrocarbon enrichment characteristics and difference analysis in the TZ1-TZ4 well block of the tarim Basin

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Petroleum Science 2010年第2期7卷 201-210页

作者： Jiang Zhenxue Pang Xiongqi Yang Haijun Li Zhuo Xiang Caifu Gu Qiaoyuan State Key Laboratory of Petroleum Resources and Prospecting Beijing 102249 China Basin and ReservoirResearch Center China University＂ of Petroleum Beijing 102249 China Exploration and Development Institute of the tarim oilfield company PetroChina Korla Xinjiang 841000 China

The reservoirs in the TZ1-TZ4 well block of the tarim Basin are complex, and the hydrocarbon enrichment shows differences. The three Carboniferous oil layers are characterized by ＂oil in the upper and lower layers and gas in the middle＂ in profile and ＂oil in the west and gas in the east＂ in plane view. In order to discuss the complex reservoir accumulation mechanisms, based on the petroleum geology and reservoir distribution, we studied the generation history of source rocks, the fault evolution and sealing, the accumulation periods and gas washing, and reconstructed the accumulation process of the TZ1-TZ4 well block. It is concluded that the hydrocarbon enrichment differences of oil layers CIII, CII and CI were caused by multiple sources and multi-period hydrocarbon charging and adjustment. The CII was closely related to CIII, but CI was formed by reservoir adjustment during the Yanshan period and was not affected by gas washing after it was formed. During the Himalayan period, different degrees of gas washing in the east and west led to hydrocarbon enrichment differences on the plane. The Carboniferous accumulation process of two-stage charging and one-stage adjustment is summarized： oil charging during the late Hercynian period is the first accumulation period of CIII and CII; oil reservoirs were adjusted into CI in the Yanshan period; finally gas washing in the Himalayan period is the second accumulation period of CIII and CII, but CI was not affected by gas washing. This complex accumulation process leads to the hydrocarbon enrichment differences in the TZ1-TZ4 well block.

关键词： tarim Basin enrichment difference multi-source and multi-period charging accumulation process

Geochemical characteristics and origin of gases from the Upper,Lower Paleozoic and the Mesozoic reservoirs in the Ordos Basin,china

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Science china Earth Sciences 2008年第S1期51卷 183-194页

作者： HU AnPing 1 ,Li Jian 2 ,ZHANG WenZheng 3.,LI ZhiSheng 2 ,HOU Lu 4 &LIU QuanYou 5 1 Department of Earth Sciences,Zhejiang University,Hangzhou 3.0027,china 2 Langfang Branch,Reasearch Institute of Petroleum Exploration and Development,Petrochina,Langfang 065007,china 3.Institute of Exploration and Development,Petrochina Changqing oilfield company,Xi’an 710021,china 4 University of Petroleum,Beijing102249,china 5 Petrochina Research Institute of Petroleum Exploration and Development,Beijing 100083.china Department of Earth Sciences Zhejiang University Hangzhou China Langfang Branch Reasearch Institute of Petroleum Exploration and Development PetroChina Langfang China Institute of Exploration and Development PetroChina Changqing Oilfield Company Xi’an China University of Petroleum Beijing China Petrochina Research Institute of Petroleum Exploration and Development Beijing China

The Ordos Basin,the second largest sedimentary basin in china,contains the broad distribution of natural gas *** far,several giant gas fields have been discovered in the Upper and Lower Paleozoic in this basin,each having over 1000×10 8 m 3.of proven gas reserves,and several gas pools have also been discovered in the *** paper collected the data of natural gases and elucidated the geochemical characteristics of gases from different reservoirs,and then discussed their *** hydrocarbons preserved in the Upper Paleozoic,the elevatedδ13. values of methane,ethane and propane indicate that the gases would be mainly coal-formed gases;the singular reversal in the stable carbon isotopes of gaseous alkanes suggests the mixed gases from humic sources with different *** the Lower Paleozoic,theδ13. 1 values are mostly similar with those in the Upper Paleozoic,but theδ13. 2 andδ13. 3.values are slightly lighter,suggesting that the gases would be mixing of coal-type gases as a main member and oil-type *** are multiple reversals in carbon isotopes for gaseous alkanes,especially abnormal reversal for methane and ethane(i.e.δ13. 1 >δ13. 2 ),inferring that gases would be mixed between high-mature coal-formed gases and oil-type *** the Mesozoic,the δ13.values for gaseous alkanes are enriched in 12C,indicating that the gases are mainly derived from sapropelic sources;the carbon isotopic reversal for propane and butane in the Mesozoic is caused by microbial oxidation and mixing of gases from sapropelic sources with different *** contrast to the Upper Paleozoic gases,the Mesozoic gases are characterized by heavier carbon isotopes of iso-butane than normal butane,which may be caused by gases generated from different kerogen types. Finally,according toδ13. 1 -Ro relationship and extremely low total organic carbon contents,the Low Paleozoic gases would not be generated from the Ordovician source as a main gas source,bycontrast, the Upper Pale

关键词： Ordos Basin natural gas chemical composition carbon isotope genesis

Poly-phase salt tectonics and hydrocarbon accumulation in tarim superimposed basin,northwest china

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Science china Earth Sciences 2004年第Z2期47卷 104-113页

作者： TANG Liangjie1,2, JIN Zhijun1’3. JIAChengzao1’4, Pl Xuejun5 & CHEN Suping1,2 1. Key Laboratory for Hydrocarbon Accumulation of Education Ministry, Beijing 102249, china 2. Basin & Reservoir Research Center, University of Petroleum, Beijing 102249, china 3. Institute of Petroleum Exploration and Development, SINOPEC, Beijing 100083. china 4. Petro{3. company Limited, Beijing 100011, china 5. tarim oilfield company, Petro{3. company Ltd., Korla 841.00, china Key Laboratory for Hydrocarbon Accumulation of Education Ministry Beijing 102249 China Basin & Reservoir Research Center University of Petroleum Beijing 102249 China Key Laboratory for Hydrocarbon Accumulation of Education Ministry Beijing 102249 China Institute of Petroleum Exploration and Development SINOPEC Beijing 100083 China Key Laboratory for Hydrocarbon Accumulation of Education Ministry Beijing 102249 China Petrochina company Limited Beijing 100011 China tarim oilfield company PetroChina Company Ltd. Korla 841000 China

The purpose of this paper is to discuss the poly-phase salt tectonics and its relation to the hydrocarbon accumulation of the tarim superimposed basin. Several salt sequences are developed in the tarim basin, they are: (1) the Mid-Early Cambrian salt sequence, mainly distributed in the west part of the north tarim uplift and Keping uplift; (2) the Early Carboniferous salt sequence, mainly distributed in the south slope of the north tarim uplift; (3. the Paleogene salt sequence, mainly distributed in the mid-west part of the Kuqa foreland fold belt and north tarim uplift; and (4) the Miocene salt sequence, mainly distributed in the east part of the Kuqa foreland fold belt. The salt sequences deposited in the tectonically calm scenario, while the salt layers deformed during the period of intense tectonism. Although the salt sequences are characteristic of plastic flow, the differences of salt deformation styles exist in the different salt sequences be-cause of the different deformation mechanism. It is attractive that the distribution of the large oil-gas fields or pools has a bearing upon the salt sequences and salt structures, such as the Tahe oilfield related to the Lower Carboniferous salt sequence and laterally facies changed mudstone, the Kela No.2 gas field to the Paleogene salt structures, and the Dina gas field to the Miocene salt structures. It is indicated that the large-scale hydrocarbon accumulation is con-trolled by the poly-phase salt sequences and structures. The deep analysis of the poly-phase salt tectonics is helpful to understanding the characteristics of the structural deformation and oil-gas accumulation of the tarim basin.

关键词： superimposed basin, salt tectonics, hydrocarbon accumulation, tarim basin.

Depositional characteristics and petroleum geological significance of wetland

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Petroleum Science 2009年第4期6卷 347-353页

作者： Jin Zhenkui Gu Junfeng Su Nina Wang Zhaofeng Huang Xiaoping State Key Laboratory of Hydrocarbon Resources and Exploration China University of PetroleumBeijing 102249China Research Institute of Petroleum Exploration and Development Xinjiang Oilfield CompanyPetroChinaKaramayXinjiang 834000China

Wetland is a new type of sedimentary facies proposed for the first time in this paper. It is a type of sedimentary environment, transitional between land facies and water (sea or lake) facies. In this paper, wetland is redefined as “a type of sedimentary environments whose ground surface is flat and wet throughout the year, which may be covered with very shallow water (less than 2 m deep), and is covered with lush plant growth”. Wetland is reclassified into two types, swamp wetland (swamp in brief) and wet plain wetland (wet plain in brief). Swamp deposits are coal, while wet plain deposits are dark colored mudstones or silty mudstones rich in plant fossils and carbon debris. The deposits of wet plain are different from those of lake and floodplain in the abundance of plant fossils, color, resistivity well logging curve, and other sedimentary characteristics. In boreholes, resistivity logging can be used to distinguish between wet plain mudstones and lake mudstones. Understanding the sedimentary characteristics of wet plain wetland can help to identify wet plain deposits which were formerly classified as floodplain or lake deposits. This will help to reconstruct the palaeogeography and to understand the history of basin and climate evolution accurately, and is especially important in evaluation of the hydrocarbon generating potential of a basin. With the Jurassic Sangonghe Formation of the Yanqi Basin as an example, the identification characteristics of wetland are described.

关键词： Wetland wet plain Yanqi Basin Sangonghe Formation of Jurassic braided river delta