• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition >Successful Applications of a Novel Compound Lost Circulation Additive with Variable Structure
【24h】

Successful Applications of a Novel Compound Lost Circulation Additive with Variable Structure

机译：具有可变结构的新型复合物丧失循环添加剂的成功应用

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Lost circulation is a complicated situation in the drilling operation, wasting a lot of time and mud during processing. A serious lost circulation can cause many hazards, such as internal pressure drop, affecting normal drilling, causing well instability, inducing formation fluid into wellbore and blowout. The current plugging technology can solve some of lost circulation leakage, but there are still some problems in conventional plugging technology, such as particle size of plugging material does not match crack width, slippage of plugging material in blocking zone, and weak adhesion of plugging material additive to reservoir, which restricts the success rate of lost circulation plugging operation. Variable structure has variable network affected by stress compound with elastic plugging material forming a plugging mixture for different leakage speed and crack width. The rigid plugging materials with different particle sizes and different materials are mixed in a certain proportion to form a compound plugging agent for different leakage speeds and different leakage crack widths. Combined with the variable structure gel, a new type of lost circulation plugging system is used to seal the fracture-cavity reservoir leakage. Through indoor experiment simulation, the on-site plugging formula which is suitable for fracture- vug reservoir under different temperature is formed and determined. Scanning electron microscope shows the compound plugging mixture (CPM) has a variable network structure. Solution experiments show CPM is not diluted with water. Single plugging gel can plug 0.04- 0.8 mm cracks and pressure capacity is greater than 3 MPa. With different types and sizes rigid plugging materials and elastic plugging material can block crack width of 0.15-5mm and pressure capacity is greater than 7.5MPa. The novel CPM material has been tested and used for more than 50 wells. The porosity or micro- fracture leakage and the leakage rate of less than 30m~3 /h, the success rate of plugging is up to 100%, and the loss rate between 30 and 60m~3 /h, the success rate of plugging is beyond 85%. And the leakage rate of more than 60m~3 /h, the success rate of plugging is more than 80%.Leakage loss time is less than 80% shorter than conventional plugging technology.
机译：失去的循环是钻孔操作中复杂的情况，在加工过程中浪费了很多时间和泥浆。严重丢失的循环可能会导致许多危险，例如内部压降，影响正常钻孔，导致良好的不稳定，诱导地层流体进入井筒和井喷。目前的堵塞技术可以解决一些丢失的循环泄漏，但传统的堵塞技术仍然存在一些问题，例如封堵材料的粒度与裂缝宽度不匹配，堵塞材料的堵塞材料滑动，堵塞材料较弱的粘合材料储层添加剂，限制循环堵塞操作的成功率。可变结构具有由应力化合物影响的可变网络，具有弹性堵漏材料，形成堵塞混合物，用于不同的泄漏速度和裂缝宽度。具有不同粒度和不同材料的刚性堵塞材料以一定比例混合，形成用于不同泄漏速度和不同泄漏裂纹宽度的复合堵塞剂。结合可变结构凝胶，新型丢失的循环堵塞系统用于密封裂缝储存器泄漏。通过室内实验仿真，形成并确定适用于不同温度下的骨折储存器的现场堵漏配方。扫描电子显微镜显示化合物堵塞混合物（CPM）具有可变的网络结构。解决方案实验显示CPM不会用水稀释。单个堵塞凝胶可以插入0.04- 0.8 mm裂缝和压力容量大于3MPa。采用不同的类型和尺寸刚性堵漏材料和弹性堵漏材料可以阻塞裂缝宽度为0.15-5mm，压力容量大于7.5MPa。新型CPM材料已经过测试并用于50多个孔。孔隙率或微骨折泄漏和泄漏率小于30m〜3 / h，堵塞的成功率高达100％，并且损失率为30至60m〜3 / h，堵塞成功率是超过85％。并且泄漏率超过60m〜3 / h，堵塞的成功率超过80％以上。抑制损耗时间小于传统的堵塞技术的80％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号