The utility model provides a pressure gauge tool for downhole pressure measurement in an oil field. The main body of the pressure gauge tool is provided with two strip grooves, and the upper and lower ends are respectively connected with the half-pipe shield sleeve and the all-through shield sleeve thread buckle; the half-pipe of the pressure gauge is placed between the strip groove and the half-pipe shield sleeve; one end of the half-pipe of the pressure gauge is shielded by the half-pipe. The inner end face of the sleeve is shielded; the shielding screw ring is connected with the lower end thread of the main body of the pressure gauge tool, and the locking screw ensures that the shielding screw ring does not buckle. The utility model changes the forming mode of the pressure gauge room and the loading and unloading pressure gauge mode, adopts the structure of double grooves, double half pipes and double shielding holes, draws half pipes into the shielding hole, fixes the limit in three directions, tightens one end screw ring and screw locking structure and one pulling action to complete the loading and unloading pressure gauge operation, and protects the half pipe mining of the pressure gauge. The internal pressure gauge can be identified by opening windows, and the additional marking steps can be reduced. By increasing the function structure of single component, the number of components and operation steps are reduced, the tool body length space is maximized and the tool volume is reduced.
【技术实现步骤摘要】
一种油田井下测压用装压力计工具
：本技术公开一种油田井下测压用装压力计工具，目的在于提高测压工具可靠性，提高测压资料成功率，减化测压装卸压力计步骤，属于油田开发监测装置领域。
技术介绍
：油田井下测压是重要的认识油藏的手段，在采油井，采气井，注入井中有多种测压方法，其中用管柱连接装压力计工具及封隔器的分层测压占主导地位。一般分层测压分为二—四段，每个层段对应下入一套装压力计工具，现有的装压力计工具有内置式（压力计室置于导液通道内）和外置式（压力计室置于导液通道之外）两大类，每类还有不同形式，基本要求是保证压力计室与油管内导液通道间密封性，压力计室与油管外环形空间导通，保证工具抗拉与抗压强度；现用的装压力计工具可靠性、密封性存在问题，装卸压力计操作麻烦，管理不当还可造成压力计掉井或下错层。现有内置装压力计工具，压力计室较细较长与主体螺纹连接，主体件有上下连通的导液通道，还有使环形空间与油管内压力计室连通的导压孔，压力计室置于油管内导液通道中，丝扣连接部位多，胶圈密封，拆卸部位多，每次操作须更换密封圈，压力计室内不易观察和清洗，管理环节多。现有外置装压力计工具虽避免了...
【技术保护点】
1.一种油田井下测压用装压力计工具，其特征在于：由装压力计工具主体、护压力计半管、半管遮挡套、全通遮挡套、遮挡螺环及锁紧螺钉构成；其中，所述的装压力计工具主体的中心设有导液孔，装压力计工具主体的表面设有两个条形主体半圆槽，主体半圆槽上部设有主体长方台槽；装压力计工具主体的上端和下端分别与半管遮挡套及全通遮挡套通过丝扣连接，并通过上焊接部位及下焊接部位焊接成为一体；所述的护压力计半管置于装压力计工具主体的长方台槽与遮挡套半管通孔及遮挡套半管孔之间，可以插入和拉出；护压力计半管长条形平面与主体长方台槽接触；护压力计半管外侧半圆面与半管遮挡套及全通半管遮挡套半圆孔面接触，护压力计...
【技术特征摘要】
1.一种油田井下测压用装压力计工具，其特征在于：由装压力计工具主体、护压力计半管、半管遮挡套、全通遮挡套、遮挡螺环及锁紧螺钉构成；其中，所述的装压力计工具主体的中心设有导液孔，装压力计工具主体的表面设有两个条形主体半圆槽，主体半圆槽上部设有主体长方台槽；装压力计工具主体的上端和下端分别与半管遮挡套及全通遮挡套通过丝扣连接，并通过上焊接部位及下焊接部位焊接成为一体；所述的护压力计半管置于装压力计工具主体的长方台槽与遮挡套半管通孔及遮挡套半管孔之间，可以插入和...
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