苏里格气田苏77区块丛式井优快钻井配套技术          下载免费PDF全文

柯学  冉照辉  陈建  邢建 《探矿工程》2012,39(8):5-10

苏77区块处于生态环境脆弱的半沙漠半草原地区,采用丛式井开发方式,不仅可以加快产能建设,而且可以降低钻井成本,保护环境,便于气田维护管理。针对苏77区块钻井存在的技术难点,根据地层自然增降斜及方位漂移规律,从平台部署、井身轨迹剖面、钻具组合、PDC钻头选型及钻井液体系及性能维护等方面进行优化,形成了一套适应苏77区块的丛式井优快钻井配套技术,有效地提高了机械钻速,缩短了钻井周期及平台建井周期,加快了产能建设。其中,苏77-6-5井完钻井深3167 m,钻井周期仅为9.98天,创造了整个苏里格气田定向井最短钻井周期记录。  相似文献   

开发地震构造建模技术的研究方法     

刘雷  金利  文宇飞 《高原地震》2009,21(3):46-51

某油田已注水开发40年,高井网密度条件下仍对某些微构造、断层认识不足。运用三维地震解释资料与开发井资料解释两项技术结合,优势互补,相互验证,形成了一套开发地震可视化构造建模技术,应用该项技术显著提高了断层的首尾部延伸、复杂断裂带断层的组合关系、无井断点控制的小断层识别精度,对油田特高含水期提高钻井成功率、油田精细调整挖潜具有重要意义。  相似文献   

井间断裂构造的计算机分析方法     

周小军  薛林福  王剑 《吉林大学学报(地球科学版)》2004,34(3):393-398

井间断裂构造分析是根据测井资料,以地层分层数据为基础,利用计算机技术实现井间断裂分析的一种计算机自动分析方法.动态波形匹配算法能够很好地建立井间地层之间的对比关系,可以通过曲线拟合、特征提取、匹配代价计算等步骤,自动绘制井间地层对比的路径图解.通过对各种构造的路径图分析,总结出正断层、逆断层、不整合、同沉积断层、犁式断层和地层尖灭等34种情况下的路径图模式,提出路径图模式及相关概念.  相似文献   

2018年探矿工程十大新闻          下载免费PDF全文

本刊编辑部 《探矿工程》2019,46(1):1-4

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地下水监测井钻探施工技术          下载免费PDF全文

王刚  王烁  赵建粮  李卫华 《探矿工程》2019,46(9):51-56

地下水监测井是进行地下水监测的公益性、永久性基础设施,其施工质量直接决定后期的运行效果,钻探成孔是施工中的重要环节。河南省范围内地下水监测工程站点主要分布在黄淮平原、南阳盆地、洛阳盆地及灵三盆地,监测地下水的类型以孔隙水为主,其次为基岩裂隙水和岩溶水。钻探施工根据监测井性质和地质条件不同,分别采用泵吸反循环、正循环回转钻进、冲击钻进及空气潜孔锤钻进等。根据不同钻探工艺原理论述了施工技术要点,对比分析了各工艺的特点及应用效果,总结的施工经验可供类似工程参考。  相似文献   

高密市激电测深定井方法探讨          下载免费PDF全文

吕兰颂  付娟  靳丰山  胡玉禄  温琳 《山东国土资源》2011,27(12)

在高密的找水工作中,采用激电测深法进行定井,推断含水层的位置和富水性,在物探确定的异常部位实施钻探,找水效果显著。根据高密市找水定井实例,简要介绍激电测深定井法在找水定井过程中应注意的事项,为今后运用该方法进行找水定井工作提供借鉴。  相似文献   

枣园区块煤层气井产出水化学特征及动态变化规律     

朱卫平  唐书恒  吕建伟  韩继凡  张海霞  徐建红 《煤田地质与勘探》2015,43(1):72-75

沁水煤层气田枣园区块煤层气开采井产出的水具有高盐度、高矿化度的特点,直接排放可能会造成生态环境的破坏。通过连续跟踪采集枣园区块煤层气井产出水样品,并进行了25项物理化学参数的系统测试,分析了矿化度及各种阴、阳离子的动态变化规律。发现其矿化度、氯离子、钠离子浓度均呈现先高后低的变化趋势,而碳酸氢根离子的变化规律相反,呈现先低后高的特点。水化学类型呈现由Cl-Na型向Cl·HCO₃-Na型和HCO₃·Cl-Na型变化的规律。产出水中阳离子以K++Na+离子为主,阴离子HCO₃-和Cl-值较为接近,不存在明显占绝对优势的离子。依据产出水中各离子的变化特点,依据国家Ⅱ类地表水标准,采用回归分析方法,建立了氯离子浓度排采动态变化模型。研究成果为煤层气井产出水处理技术提供了依据。   相似文献   

Steady flows driven by sources of random strength in heterogeneous aquifers with application to partially penetrating wells     

Gerardo Severino  Alessandro Santini  Angelo Sommella 《Stochastic Environmental Research and Risk Assessment (SERRA)》2008,22(4):567-582

Average steady source flow in heterogeneous porous formations is modelled by regarding the hydraulic conductivity K(x) as a stationary random space function (RSF). As a consequence, the flow variables become RSFs as well, and we are interested into calculating their moments. This problem has been intensively studied in the case of a Neumann type boundary condition at the source. However, there are many applications (such as well-type flows) for which the required boundary condition is that of Dirichlet. In order to fulfill such a requirement the strength of the source must be proportional to K(x), and therefore the source itself results a RSF. To solve flows driven by sources whose strength is spatially variable, we have used a perturbation procedure similar to that developed by Indelman and Abramovich (Water Resour Res 30:3385–3393, 1994) to analyze flows generated by sources of deterministic strength. Due to the linearity of the mathematical problem, we have focused on the explicit derivation of the mean head distribution G _d (x) generated by a unit pulse. Such a distribution represents the fundamental solution to the average flow equations, and it is termed as mean Green function. The function G _d (x) is derived here at the second order of approximation in the variance σ² of the fluctuation (where K _A is the mean value of K(x)), for arbitrary correlation function ρ(x), and any dimensionality d of the flow domain. We represent G _d (x) as product between the homogeneous Green function G _d ⁽⁰⁾(x) valid in a domain with constant K _A , and a distortion term Ψ _d (x) = 1 + σ²ψ _d (x) which modifies G _d ⁽⁰⁾(x) to account for the medium heterogeneity. In the case of isotropic formations ψ _d (x) is expressed via one quadrature. This quadrature can be analytically calculated after adopting specific (e.g.. exponential and Gaussian) shape for ρ(x). These general results are subsequently used to investigate flow toward a partially-penetrating well in a semi-infinite domain. Indeed, we construct a σ²-order approximation to the mean as well as variance of the head by replacing the well with a singular segment. It is shown how the well-length combined with the medium heterogeneity affects the head distribution. We have introduced the concept of equivalent conductivity K ^eq(r,z). The main result is the relationship where the characteristic function ψ^(w)(r,z) adjusts the homogeneous conductivity K _A to account for the impact of the heterogeneity. In this way, a procedure can be developed to identify the aquifer hydraulic properties by means of field-scale head measurements. Finally, in the case of a fully penetrating well we have expressed the equivalent conductivity in analytical form, and we have shown that (being the effective conductivity for mean uniform flow), in agreement with the numerical simulations of Firmani et al. (Water Resour Res 42:W03422, 2006).  相似文献   

塔里木盆地顺北区块二叠系井漏复杂的分析及对策          下载免费PDF全文

董小虎  李银婷 《探矿工程》2020,47(2):59-62

顺北区块钻井项目施工中,二叠系的井漏复杂情况较多,漏失量大,易发生再次或多次漏失,严重时导致井壁垮塌掉块卡钻,致使井下复杂情况高发,给钻井工程带来损失,影响了该区块的勘探开发速度。二叠系火成岩发育,地层裂缝发育,地层破裂,钻井时井下复杂主要表现为漏失。针对此问题开展了顺北地区二叠系井漏复杂分析,结合顺北区块施工项目的实际情况以及二叠系地层特点,分析了该区块的二叠系钻进难点,总结了随钻堵漏技术具体的施工措施和不同漏速下的堵漏方案.经过实践验证,该综合防漏堵漏对策能有效减少井漏复杂,提高堵漏效率。  相似文献   

大汶口盆地岩盐对接井钻探施工工艺研究          下载免费PDF全文

岳盈括 《探矿工程》2020,47(3):31-37，43

大汶口盆地蕴藏着丰富的岩盐资源,岩盐矿矿层埋深较深,上覆地层为古近系巨厚的松散泥岩、砂岩,易发生遇水软化,施工难度较大。山东肥城海晶盐化有限公司实施100万t/年卤折盐采输卤工程,实施卤井7组,每组井深约3000 m。定向对接井要求精准定点造斜、连续造斜。本文介绍了对接井施工中采用的关键施工工艺及MWD无线随钻测斜仪在定向钻进中进行钻井轨迹控制的应用实例。对如何在岩盐地层钻进、螺杆钻具应用、定点造斜等关键技术措施进行了详细阐述,以期为同类型卤水对接井项目施工中提供参考。  相似文献