土壤吸附丝不同采样方式的应用研究  

Application Research of Different Sampling Styles in Sample Collection by Soil Adsoption Wire Method

作　　者：蒋涛[1] 刘新华 汤玉平[1] 程同锦[1] 陈银节[1] 陈浙春[1] 

机构地区：[1]中国石化股分公司石油勘探开发研究院无锡石油地质研究所,江苏无锡214151 [2]中国石油股分公司长城钻探工程分公司录井公司,辽宁盘锦124010

出　　处：《天然气地球科学》2009年第3期429-435,共7页Natural Gas Geoscience

基　　金：中国石化股份公司科研项目(编号:P03073)资助

摘　　要：土壤吸附丝样品采集方式包括野外(新鲜土壤)插丝采集和室内(土壤样预处理后)插丝采集2种。为了探究土壤吸附丝不同采集方式的应用影响因素,在渤海湾盆地临南某区进行了2种吸附丝采集方式的对比实验,发现2种样品采集方式对不同吸附丝指标构成的影响程度不同,但有效指示油气藏的C2-8、C9-19、总烃等多个指标异常空间展布特征并未受其采集方式的影响。准噶尔盆地柴窝堡某区野外采集的吸附丝样品,C4-5指标环状异常对柴参1井油气藏有很好的指示效果。塔里木盆地英南2井研究区室内采集的吸附丝样品,C2-8指标"驼峰"异常、C9-19指标顶端异常的空间展布特征很好地指示了英南2井气藏。3个地区有效吸附丝指标真实响应油气藏的应用结果表明:采集方式是吸附丝有效指标的外在影响因素;吸附丝指标地球化学特征是其内在影响因素;油气藏油气垂向微渗漏才是吸附丝有效指标的作用因素,它也是吸附丝有效指标响应油气藏的真正原因。Soil adsoption wire method consists of two sampling styles, field wire-insertion sampling （from intact fresh soil） and indoor wire-insertion sampling （from preliminarily processed soil）. An experimental research of this two sampling styles has been conducted in Linnan area, Bohai Bay Basin to investigate the effects of different sampling styles. The results show that different sample styles have different influences on the adsorption hydrocarbon indicators, although the anomaly distribution characteristics of a number of effective indicators such as C2-8, C9-19, and total hydrocarbons have not been influenced by the sampling styles. A field study of wire-insertion sampling in Junggar Basin indicates that the indicators C4-5 can well reflect the subsurface oil and gas reservoir of Well Chaican 1. And an indoor wire-insertion sampling study in Well Yingnan 2, Tarim Basin shows that the surface anomaly distribution characteristics of the geochemical indicators C2-8 and C15- 19 can also well indicate the existing oil and gas reservoir in the subsurface. The wire-adsorbed hydrocarbon indicators of the above three basins obtained by two sampling styles all respond truly to the underlying existing oil and gas reservoirs, indicating that the sampling style is a kind of external influencing factor of the effective wire-adsorbed hydrocarbon indicators, while the geochemical characteristics of the indicators is the internal influencing factor. And the vertical hydrocarbon microseepage from the reservoir is the direct influence factor of the effective wire-adsorbed hydrocarbon indicators, which is the real cause for the effective wire-adsorbed hydrocarbon indicators to respond to the underground oil and gas reservoir.

关 键 词：吸附丝 样品采集 地球化学指标 应用 研究 

分 类 号：TE132.4[石油与天然气工程—油气勘探]