非常规油气
非常規油氣
비상규유기
Unconventional Oil & Gas
2015年
3期
22-26
,共5页
纪甜甜%张武%任红%郭峰%唐渊明
紀甜甜%張武%任紅%郭峰%唐淵明
기첨첨%장무%임홍%곽봉%당연명
谱蓝化%拓频处理技术%薄互层%春光区块
譜藍化%拓頻處理技術%薄互層%春光區塊
보람화%탁빈처리기술%박호층%춘광구괴
spectral bluing%frequency broadening technique%thin interbedded layer%Chunguang Block
春光区块主要储层为河道砂体, 主要特征为砂泥岩薄互层, 储层厚度相对较小, 纵向上岩性变化快, 横向上连通性较差, 储层预测难度大. 针对此问题, 探讨了谱蓝化拓频处理技术在春光区块的应用. 春光区块的地震勘探数据经过谱蓝化拓频处理后地震剖面分辨率和主频有所提高, 高频弱信号能量强度得到增加, 同时基本保持了原始地震勘探数据的信噪比、 振幅和时频特性, 地震剖面同相轴更精细, 能够获得更清晰的目的层段信息. 应用结果表明, 谱蓝化拓频处理技术解决了该区地震剖面与实钻井地质分层不一致的问题, 提高了地震勘探数据识别薄互层的能力, 为该区块薄互层砂体的储层预测及油气藏描述提供了可靠的基础数据.
春光區塊主要儲層為河道砂體, 主要特徵為砂泥巖薄互層, 儲層厚度相對較小, 縱嚮上巖性變化快, 橫嚮上連通性較差, 儲層預測難度大. 針對此問題, 探討瞭譜藍化拓頻處理技術在春光區塊的應用. 春光區塊的地震勘探數據經過譜藍化拓頻處理後地震剖麵分辨率和主頻有所提高, 高頻弱信號能量彊度得到增加, 同時基本保持瞭原始地震勘探數據的信譟比、 振幅和時頻特性, 地震剖麵同相軸更精細, 能夠穫得更清晰的目的層段信息. 應用結果錶明, 譜藍化拓頻處理技術解決瞭該區地震剖麵與實鑽井地質分層不一緻的問題, 提高瞭地震勘探數據識彆薄互層的能力, 為該區塊薄互層砂體的儲層預測及油氣藏描述提供瞭可靠的基礎數據.
춘광구괴주요저층위하도사체, 주요특정위사니암박호층, 저층후도상대교소, 종향상암성변화쾌, 횡향상련통성교차, 저층예측난도대. 침대차문제, 탐토료보람화탁빈처리기술재춘광구괴적응용. 춘광구괴적지진감탐수거경과보람화탁빈처리후지진부면분변솔화주빈유소제고, 고빈약신호능량강도득도증가, 동시기본보지료원시지진감탐수거적신조비、 진폭화시빈특성, 지진부면동상축경정세, 능구획득경청석적목적층단신식. 응용결과표명, 보람화탁빈처리기술해결료해구지진부면여실찬정지질분층불일치적문제, 제고료지진감탐수거식별박호층적능력, 위해구괴박호층사체적저층예측급유기장묘술제공료가고적기출수거.
The main reservoir of Chunguang Block is the channel sand body, and interbed developed in thin sand shale. Thickness changes fast vertically and connectivity is poor horizontally. So reservoir prediction is difficult. In this paper, the application of spectral blueing frequency broadening technique is discussed. Starting from the principle of spectral blueing technique, the processing flow is introduced. The processed seismic section resolution and frequency are improved, and the energy intensity of high-frequency weak signal is enhanced. Meanwhile, the signal-to-noise ratio, amplitude and time fre-quency characteristics of original seismic data are basically maintained, and the seismic section phase axis is finer, which can obtain much clearer objective interval information. Through practical application in Chunguang Block, the inconsistency between seismic section and drilling geological layering is solved. It is proved that the new technique can improve recogni-tion of seismic data of thin interbed, which provides reliable basic data for reservoir prediction and hydrocarbon reservoir description of thin interbedded sand body in the block.