价值工程
價值工程
개치공정
VALUE ENGINEERING
2015年
12期
117-119
,共3页
特低渗透油气藏%启动压力梯度%产能预测%间歇式生产
特低滲透油氣藏%啟動壓力梯度%產能預測%間歇式生產
특저삼투유기장%계동압력제도%산능예측%간헐식생산
ultra-low permeability reservoir%threshold pressure gradient%prediction%intermittent production
特低渗透油藏产能低，开发难度大已成为共识。为了对特低渗透油藏油井产能和油藏产量进行准确的预测，本文在达西公式的基础上，考虑到特低渗透油藏的渗流受到启动压力梯度的影响，推导出了具有启动压力梯度的间歇式生产的油井产能的预测模型，得出油井间歇式生产过程中采油量与时间存在指数递减关系；还推导得出油井关井时间段井底压力变化的数学模型，分析出其井底压力变化与采油时间段的采油速度有关，并给出了进行计算机迭代运算的求解方法和计算步骤。
特低滲透油藏產能低，開髮難度大已成為共識。為瞭對特低滲透油藏油井產能和油藏產量進行準確的預測，本文在達西公式的基礎上，攷慮到特低滲透油藏的滲流受到啟動壓力梯度的影響，推導齣瞭具有啟動壓力梯度的間歇式生產的油井產能的預測模型，得齣油井間歇式生產過程中採油量與時間存在指數遞減關繫；還推導得齣油井關井時間段井底壓力變化的數學模型，分析齣其井底壓力變化與採油時間段的採油速度有關，併給齣瞭進行計算機迭代運算的求解方法和計算步驟。
특저삼투유장산능저，개발난도대이성위공식。위료대특저삼투유장유정산능화유장산량진행준학적예측，본문재체서공식적기출상，고필도특저삼투유장적삼류수도계동압력제도적영향，추도출료구유계동압력제도적간헐식생산적유정산능적예측모형，득출유정간헐식생산과정중채유량여시간존재지수체감관계；환추도득출유정관정시간단정저압력변화적수학모형，분석출기정저압력변화여채유시간단적채유속도유관，병급출료진행계산궤질대운산적구해방법화계산보취。
It is consensus that ultra-low permeability reservoir is low deliverability and difficult to develop. In order to predict oil well deliverability and reservoir production of ultra-low permeability reservoir accurately, a deliverability prediction model in intermittent production was presented based on Darcy law. The effect of the threshold pressure gradient on the percolation laws was taken into account in this model. There was an index decline relationship between oil production and time within the slot of extracting oil in the oil production. A model of variation in the bottom hole flow pressure was presented between the production downtime. Variation in the bottom hole flow pressure is in connection with oil production rate at the slot of extracting oil was analyzed. The solution method and calculation steps used computer were given in this paper.
