發(fā)布時(shí)間：2018-03-23 01:29

  本文選題：致密油氣藏　切入點(diǎn)：水力壓裂　出處：《巖性油氣藏》2017年01期 　論文類型：期刊論文

【摘要】：微地震監(jiān)測(cè)技術(shù)通過(guò)對(duì)儲(chǔ)層壓裂改造引發(fā)的震源點(diǎn)進(jìn)行成像,可實(shí)現(xiàn)壓裂過(guò)程監(jiān)控和井網(wǎng)布局優(yōu)化等。相對(duì)井中微地震監(jiān)測(cè)而言,地面微地震監(jiān)測(cè)數(shù)據(jù)具有信號(hào)能量弱、噪音干擾強(qiáng)及事件定位困難等特點(diǎn),嚴(yán)重制約著微地震事件定位精度和監(jiān)測(cè)結(jié)果的可靠性。針對(duì)地面微地震數(shù)據(jù)特征,利用微地震數(shù)據(jù)聯(lián)合去噪、能量聚焦精確定位和壓裂裂縫聯(lián)合解釋等關(guān)鍵技術(shù),考慮不同噪音特征進(jìn)行噪音壓制,基于能量聚焦疊加原理確保微地震事件定位精度,并采用多類信息聯(lián)合解釋提高裂縫預(yù)測(cè)的可靠性,從而為儲(chǔ)層壓裂改造提供依據(jù)。在實(shí)際地面微地震監(jiān)測(cè)應(yīng)用中,監(jiān)測(cè)結(jié)果與壓裂井油藏開(kāi)發(fā)數(shù)據(jù)吻合程度較高,證實(shí)了聯(lián)合解釋等關(guān)鍵技術(shù)的有效性和實(shí)用性。地面陣列式微地震監(jiān)測(cè)技術(shù)在致密油氣藏儲(chǔ)層壓裂改造中具有廣闊的應(yīng)用前景。
[Abstract]:By imaging the focal points caused by reservoir fracturing, micro-seismic monitoring technology can realize fracturing process monitoring and well pattern optimization. Compared with in-well micro-seismic monitoring, surface micro-seismic monitoring data have weak signal energy. The characteristics of strong noise interference and difficulty in locating events seriously restrict the accuracy of micro-seismic event location and the reliability of monitoring results. According to the characteristics of ground micro-seismic data, the microseismic data are combined to de-noise. The key techniques, such as accurate location of energy focusing and joint interpretation of fracturing fractures, are used to suppress noise in consideration of different noise characteristics. Based on the principle of energy focusing superposition, the positioning accuracy of micro-seismic events is ensured. The reliability of fracture prediction is improved by combined interpretation of multiple types of information, which provides a basis for reservoir fracturing reconstruction. In the application of actual ground micro-seismic monitoring, the monitoring results are in good agreement with the reservoir development data of fracturing wells. The effectiveness and practicability of key techniques such as joint interpretation are confirmed. The surface array micro-seismic monitoring technology has a broad application prospect in fracturing reconstruction of tight reservoirs.
【作者單位】： 中國(guó)石油大學(xué)(華東)地球科學(xué)與技術(shù)學(xué)院;中國(guó)石化勝利油田分公司物探研究院;
【基金】：國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)項(xiàng)目“陸上非一致性時(shí)延地震、微地震油藏監(jiān)測(cè)方法研究”(編號(hào):2011AA060303)資助
【分類號(hào)】：TE357;P631.4

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