【摘要】：英臺油田具有1億噸的油氣資源,儲量豐富,但難以開采,目前急需提高整體開發(fā)效果,解決開采上產難題,即鉆井防斜難題。針對此問題,首先通過分析英臺地區(qū)地質概況和以前完鉆的鉆井工程基礎資料,以此為基礎,研究影響井斜的主要因素:一、地層因素;二、鉆具組合和鉆進參數。其中鉆具組合和鉆進參數為可控因素,對可控因素進行研究優(yōu)選。通過搜集整理2010、2011、2012年的實鉆井井史資料,統(tǒng)計分析了42口井的防斜措施及鉆井參數特點,重點是鉆頭選型及鉆井參數(鉆壓和轉速)配合。得出幾組有利于“防斜打快”的鉆具組合,鉆井參數和不同地層鉆頭選型依據。2010年以來,英臺油田已完鉆深井Φ228.6mm井眼所占比例最大,以Φ228.6mm井眼為例,以前期研究成果中建立的BHA受力分析模型和鉆進趨勢預測模型為基礎,模擬分析Φ228.6mm井眼中各種防斜打直鉆具組合的使用效果,初步優(yōu)化了防斜打直鉆具組合設計,優(yōu)選了鉆進參數:(1)塔式鉆具只有在小鉆壓時才有糾斜效果,糾斜效果隨鉆壓增加而逐漸減弱;(2)穩(wěn)定器安放位置是鐘擺鉆具組合設計的關鍵;(3)鉆壓影響柔性鐘擺鉆具的防斜打直效果;(4)單彎雙穩(wěn)導向鉆具在直井段旋轉鉆進時能夠實現防斜打直。將此結論應用于以后的生產實踐中,提高開采速度,解決上產難題。
[Abstract]:Yingtai Oilfield has 100 million tons of oil and gas resources, rich in reserves, but difficult to exploit. At present, it is urgent to improve the overall development effect and solve the problem of production, that is, drilling anti-deviation problem. In order to solve this problem, first of all, by analyzing the geological situation of Yingtai area and the basic data of drilling engineering before drilling, the main factors influencing well deviation are studied: first, formation factor; second, drilling tool combination and drilling parameters. The combination of drilling tools and drilling parameters are controllable factors. Through collecting and sorting out the actual drilling well history data in 2010 / 2011 and 2012, the anti-deviation measures and the characteristics of drilling parameters of 42 wells are statistically analyzed. The emphasis is on bit selection and matching of drilling parameters (drilling pressure and rotational speed). Several sets of drilling tool combinations, drilling parameters and drill bit selection basis for different formations are obtained. Since 2010, the proportion of 桅 228.6mm boreholes in deep wells in Yingtai Oilfield has been the largest, taking 桅 228.6mm borehole as an example. Based on the BHA force analysis model and drilling trend prediction model established in the previous research results, this paper simulates and analyzes the application effect of various anti-deviation drilling straight drilling tool combinations in 桅 228.6mm well, and preliminarily optimizes the design of anti-slant drilling straight drilling tools combination. The optimized drilling parameters are as follows: (1) the tower drilling tools have the effect of correcting the deviation only when the drilling pressure is small. (2) the position of stabilizer is the key to the design of pendulum drilling tool combination; (3) drilling pressure affects the anti-deviation and straightening effect of flexible pendulum drilling tool; (4) single bend bistable guide drilling tool is rotated drilling in vertical well section. Can achieve anti-slant straightening. This conclusion is applied to the production practice in the future to improve the mining speed and solve the problem of production.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE245

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本文編號：2186115