随着石油勘探开发的深入进行，低渗、特低渗油藏的评价及开发正受到越来越多的关注。由于低渗油藏较强的非均质性，在滚动开发时通常先对甜点进行集中开采，因此需要对甜点有较高的认识。而当前各种判断甜点的方法都存在一定的技术或经济层面的问题。基于试井技术，本文建立了一套完整的试井解释体系。使用该体系能够较好地降低试井解释的多解性，获得合理可靠的解释结果，并对结果通过插值方法来识别甜点。在该体系中，建立了基于时空尺度的“三维”试井解释评价技术。以井组为单位，分析并解释了所有试井测试资料，对最终试井解释结果中的地层系数进行克里格插值，并根据插值结果评价了地层系数在整个区块上的空间分布，提出了适宜开发的甜点位置，以此用来指导生产开发。为说明该体系的应用价值，本文给出了长庆油田某区块的分析案例。

With the development of the oil field ,more attention has been paid to the low and ultra-low permeability reservoirs .During the rolling development of such reservoirs ,produc-tion usually concentrates on sweep spots due to their strong heterogeneities .Hence ,the i-dentification of the sweet spots plays a vital role in production .The current methods to iden-tify the sweet spots ,however ,have the limitation in terms of technique and economy .Based on well test analysis ,this paper established a system approach to identify the sweet spots , which could lower the uncertain of well test analysis and evaluate the sweep spots in an eco-nomic and reliable way .This system approach is as follows .Based on the unit of well group , 3D well test analysis method (spatial and temporal scale) was initially established to analyze the test data .Then Kriging interpolation was applied to predict spatial distribution of the for-mation factor of the matrix .According to the results ,potential sweet sp

通过研究南方碳酸盐岩海相地层发育区岩石标本电磁物性特征，得出页岩层系在地层剖面中为典型的低阻目标，具备利用电磁法勘探的基础，同时，基于岩石样品和井中岩芯的测定结果证实富有机质页岩层系的高极化响应和高TOC含量有很好的对应关系，具备利用极化异常圈定页岩气“甜点”区的有利条件。时频电磁法将时间域电性勘探和频率域极化性勘探结合在一起，通过大功率发射有效激发页岩层系的响应，配合地震勘探等技术，发挥了综合勘探的技术经济优势，实现了快速识别页岩气“甜点”目标的目的。笔者从页岩气目标的物性基础研究入手，总结了针对页岩气目标的电性和极化性异常提取和综合分析技术，为页岩气勘探提高成功率提供了一种快速识别“甜点”目标的新思路和有效手段。

Based on a study of the electromagnetic characteristics of marine carbonate samples collected in southern China, the authors have reached the conclusion that shale beds typically show low resistivity on sections in marine carbonate areas, and this means that the shale beds can be identified with electromagnetic technique. In addition, measurement data of rock samples and core samples show that organic?rich shale beds have high polarization, which is closely related to high TOC, and this implies that we can identify''sweet spot''area of shale gas by using polarization anomaly. TFEM ( Time and Frequency Electromagnetic) combines both time?domain sounding and frequency?domain sounding into a joint system, which induces target shale beds with a high?power transmitter. The method can help seismic technique to quickly identify target''sweet spot''of shale beds. The authors firstly analyze the physical properties of target shale beds, and then demonstrate the method for extracting e

储层微观地质统计分析发现,巴喀地区砂岩粒度与储层孔隙度和渗透率具有较好的相关性。通过建立测井解释模型,利用自然伽马曲线定量表征砂岩粒度参数及储层储集参数特征,在此基础上,根据储层微观参数地质统计分析和测井模型计算结果,应用储层微观地质统计参数反演与相干体分析技术相结合的预测方法,对巴喀地区八道湾组致密砂岩储层"甜点"分布特征进行了有效的预测。八道湾组致密砂岩储层"甜点"主要分布在柯柯亚构造带断背斜高部位及其紧邻的斜坡区,储层粒度较粗,渗透率相对较高,在一定范围内,孔隙度也相对较高,为巴喀地区致密砂岩气藏的有利储层分布区和有利勘探区。

According to the reservoir microscopic geostatistical analysis,the results show that the granularity of sandstone is in relatively good correlation with reservoir porosity and permeability in Baka Region. By building log interpretation model and with gamma curve,we get the parameters of granularity of sandstone and reservoir feater. Based on the geological reservoir microscopic parameter statistical analysis and logging model calculation results,and with the reservoir microscopic geological statistical parameter inversion and coherence analysis technology,we made prediction of tight sandstone reservoir sweet spot distribution of Badaowan Formation. The sweet spot of tight sandstone reservoir in Badaowan Fortamtion are mainly distributed in high faulted anticline of Kekeya tectonic belt and adjacent to the slope area. The tight sandstone reservoir of Badaowan is of granularity coarser,and relatively high permeability;within a certain range,the porosity is relatively high,which is favora

本文讲述了对页岩气的基本认识，提出了页岩气地震勘探勘探应着重解决的几个方面，即寻找页岩区构造，储层标定，页岩的厚度预测和埋深计算，并对页岩气敏感属性进行优选、分析和提取，获得页岩气藏与地震数据体间的相互关系，从而实现对页岩气“甜点”的预测。

This article tells us basic understanding about shale gas,and proposes us several aspects should be focused on about the technology of seismic exploration in shale gas, that is structure for shale area, reservoir calibration, the thickness forecast and depth calculation, optimalizes, analyses,and extracts sensitive properties about shale gas. Then obtains the relationship between seismic data volume and shale gas reservoirs, So as to achieve the prediction of“The dessert”on shale gas.

最近几年里,页岩气已经进入商业勘探开发阶段,但是页岩气作为非常规油气,需要利用水平井及大规模压裂,获得较高产量.为了对页岩气藏的可改造性进行评价,从单井岩石物理分析入手,优选拉梅常数*密度参数指示页岩层脆性矿物含量,开展叠前AVO同步反演,预测页岩层脆性矿物含量,进而优选页岩气藏工程"甜点区".

In recent years,shale gas exploration and development has entered to the commercial stage,but as unconventional oil and gas shale gas requires the use of horizontal wells and large-scale fracturing,get a higher yield. In this paper,in order to transform the shale gas reservoirs can be evaluated,starting from a single well petrophysical analysis,preferably Lame constants*density parameter indicates brittle shale mineral content,to carry out pre-stack AVO inversion synchronization,forecasting brittle shale mineral content,and more preferably shale gas reservoir engineering“sweet zone”.