塔中117井储层烃包裹体研究及油气成藏史

Zhang N,Zhang SC,Li XJ and Tu JQ.2005.Integrated hydrocarbon inclusion studies and oil charge history in the well Tazhong 117,Tarim basin.

将一个烃包裹体视为一个小小的“油气藏圈闭”。若已知油气藏烃组分,应用 PVTpro4.0油藏烃类流体相态平衡软件,可以获取油气藏圈闭的组分 PVT 相图及捕获压力参数。本文首先对 TZ117井盐水包裹体和烃包裹体进行观察分析,将TZ117烃包裹体分成三期,然后在-170℃条件下利用喇曼测定烃包裹体中烃组分的相对含量,并输入 PVTpr04.0油藏烃类流体相态平衡软件中做出烃包裹体 PVT 相图,确定烃包裹体捕获压力。根据烃包裹体捕获压力,恢复三期烃包裹体形成时的深度,结合 TZ117埋藏史,研究 TZ117井油气成藏史。

Hydrocarbon inclusions can be regarded as mini-reservoir traps. With the PVT pro40 software the paper provides information about the PVT properties and the pressure prediction of geological fluids. Firstly, study of samples in the well Tazhong 117 shows three distinct episodes of the hydrocarbon inclusions. Secondly, the relative molar proportions of the hydrocarbon compounds from Raman Spectroscopy at -170℃ is loaded into the PVT pro4.0 software to obtain the PVT phase diagram and the pressure data. Finally, based on the pressure data of geological fluids and the temperature of brine inclusion within diagenetic cements, detail information may be reconstructed about the trapped depth of hydrocarbon inclusion, which can be used in describing the petroleum charge history of the well Tazhong 117.