本文選題：煤層氣 + 地質(zhì)建模�。� 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：煤層氣是一種新型高效節(jié)能的清潔能源,開發(fā)利用煤層氣,對(duì)于改善煤礦安全生產(chǎn),保護(hù)人類賴以生存的大氣環(huán)境以及充分利用潔凈能源,具有重要的意義。煤層氣屬于非常規(guī)天然氣,目前我國(guó)對(duì)其勘探開發(fā)程度不高,可參考的資料較少,本文以《煤層氣田開發(fā)方案編制規(guī)范》為基本綱領(lǐng),在氣田描述、綜合分析和經(jīng)濟(jì)指標(biāo)的基礎(chǔ)上,推薦本煤層氣目標(biāo)區(qū)塊開發(fā)的最佳方案,對(duì)指導(dǎo)今后的煤層氣開發(fā)有著重要的戰(zhàn)略意義。在對(duì)研究區(qū)塊煤層氣儲(chǔ)層的地理位置、交通及勘探排采數(shù)據(jù)進(jìn)行分析的基礎(chǔ)上,結(jié)合對(duì)氣藏的地層、構(gòu)造、煤系及煤層特征、煤儲(chǔ)層的描述的理解,對(duì)氣藏工程部分進(jìn)行設(shè)計(jì),氣藏工程設(shè)計(jì)主要包括儲(chǔ)量計(jì)算、開發(fā)方式選擇、層系劃分、井網(wǎng)部署及合理布井方案確定及其相關(guān)內(nèi)容;分析研究區(qū)塊的原始含氣特征、吸附特征,計(jì)算其儲(chǔ)層臨界解吸壓力、裂縫孔隙度及原始含氣飽和度,用于下步地質(zhì)建模。利用容積法確定煤層氣藏地質(zhì)儲(chǔ)量;計(jì)算出研究區(qū)塊的預(yù)測(cè)可采儲(chǔ)量及采收率;利用五種產(chǎn)能預(yù)測(cè)方法對(duì)單井產(chǎn)能進(jìn)行預(yù)測(cè),確定直井與U型井的合理產(chǎn)能。采用PETREL軟件建立氣藏精細(xì)地質(zhì)模型,利用FLOGRID軟件將建立起的單孔地質(zhì)模型轉(zhuǎn)化為雙孔地質(zhì)模型,通過CMG與ECLIPSE 2011數(shù)值模擬軟件聯(lián)合使用對(duì)布井方案進(jìn)行預(yù)測(cè),在歷史擬合精度較高的基礎(chǔ)上進(jìn)行開發(fā)方案設(shè)計(jì),設(shè)計(jì)布井方案15套,其中9套直井矩形井網(wǎng),5套等邊三角形井網(wǎng),1套U型井與直井聯(lián)合布井開發(fā),最終確定U型井與直井聯(lián)合開發(fā)方案為最優(yōu)方案。基于上述對(duì)沁南區(qū)塊煤層氣田總體開發(fā)方案的設(shè)計(jì),最后進(jìn)行經(jīng)濟(jì)評(píng)價(jià),并分別以煤層氣價(jià)格、產(chǎn)量、成本和投資,作為不確定因素進(jìn)行敏感性分析確保該開發(fā)方案的可行性和經(jīng)濟(jì)效益。
[Abstract]:Coal bed methane (CBM) is a new type of clean energy with high efficiency and energy saving. It is of great significance to develop and utilize CBM to improve the safety of coal mine production, to protect the atmospheric environment on which mankind depends and to make full use of clean energy. Coalbed methane is a kind of unconventional natural gas. At present, the degree of exploration and development of CBM in China is not high, and the reference data are less. This paper takes "Code for Coalbed methane Field Development Scheme" as the basic program and describes it in the gas field. On the basis of comprehensive analysis and economic indexes, it is of great strategic significance to recommend the best scheme for the development of the target block of CBM in order to guide the development of CBM in the future. Based on the analysis of the location, traffic and exploration data of the coalbed methane reservoir in the study block, combined with the understanding of the formation, structure, coal measures and coal seam characteristics of the gas reservoir and the description of the coal reservoir, the engineering part of the gas reservoir is designed. The engineering design of gas reservoir mainly includes the calculation of reserves, the selection of development mode, the division of strata, the arrangement of well pattern, the determination of reasonable well arrangement and its related contents, the analysis of the original gas-bearing characteristics and adsorption characteristics of the block, The reservoir critical desorption pressure, fracture porosity and original gas saturation are calculated for the next geological modeling. The volume method is used to determine the geological reserves of coalbed methane reservoir; the predicted recoverable reserves and recovery factor of the study block are calculated; the single well productivity is forecasted by five productivity prediction methods, and the reasonable productivity of the straight well and the U type well is determined. The fine geological model of gas reservoir is established by PETREL software, and the single hole geological model is transformed into a double pore geological model by FLOGRID software. The well layout scheme is predicted by the combination of CMG and ECLIPSE 2011 numerical simulation software. On the basis of high precision of historical fitting, the development scheme is designed and 15 sets of well layout schemes are designed, among which 9 sets of rectangular well pattern and 5 sets of equilateral triangle well pattern and 1 set of U type well and vertical well combined layout well development. Finally, the joint development scheme of U-well and vertical well is determined as the optimal scheme. Based on the above design of the overall development plan of the coalbed methane field in Qinnan block, the economic evaluation is carried out at the end, and the price, output, cost and investment of the coalbed methane are used separately. Sensitivity analysis as an uncertain factor ensures the feasibility and economic benefit of the development scheme.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13;TE37

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