Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Under balanced plugging technology
The invention discloses an underbalanced plugging technology, which specifically comprises the following steps: (1) after discovering a water gushing layer, record the position of the water gushing layer, close the wellhead, install a pressure gauge, observe the wellhead static pressure value, and then measure the mud specific gravity in the well to match the weighted mud specific gravity. The actual matched weighted mud specific gravity is slightly higher than the calculated value. Before plugging, the wellhead static pressure must be carefully observed to ensure that the water gushing layer pressure is stable and its value is relatively unchanged during construction. According to this, it is taken as the volume of the weighted mud. (2) After the weighted mud modulation is completed, the weighted mud is injected into the wellbore until the mud in the well stops upwelling and reaches a balance. The method is suitable for drilling and mining of soluble salt deposits and plugging in drilling, especially for treating flooding and plugging in deep drilling, and is very practical, and solves the problems of water gushing in aquifer development strata and water gushing in the middle and later stages of water dissolving mining in soluble salt deposits. Pressure Pipeline for gauge jecting cement 19*slurry for plugging *4t A. A.a AI Are. -AAA~W S-04 6 . 0 A. i 4 Cmntsur 'fo plggn q . *..~~ 0.' 4G *. 90.Figure 2
Under balanced plugging technology
The invention discloses an underbalanced plugging technology, which specifically comprises the following steps: (1) after discovering a water gushing layer, record the position of the water gushing layer, close the wellhead, install a pressure gauge, observe the wellhead static pressure value, and then measure the mud specific gravity in the well to match the weighted mud specific gravity. The actual matched weighted mud specific gravity is slightly higher than the calculated value. Before plugging, the wellhead static pressure must be carefully observed to ensure that the water gushing layer pressure is stable and its value is relatively unchanged during construction. According to this, it is taken as the volume of the weighted mud. (2) After the weighted mud modulation is completed, the weighted mud is injected into the wellbore until the mud in the well stops upwelling and reaches a balance. The method is suitable for drilling and mining of soluble salt deposits and plugging in drilling, especially for treating flooding and plugging in deep drilling, and is very practical, and solves the problems of water gushing in aquifer development strata and water gushing in the middle and later stages of water dissolving mining in soluble salt deposits. Pressure Pipeline for gauge jecting cement 19*slurry for plugging *4t A. A.a AI Are. -AAA~W S-04 6 . 0 A. i 4 Cmntsur 'fo plggn q . *..~~ 0.' 4G *. 90.Figure 2
Under balanced plugging technology
LI SHANLING (Autor:in) / WU BATEER (Autor:in) / YANG FAN (Autor:in) / LI HUAWEI (Autor:in) / GUO DENGPAN (Autor:in) / ZHAO SHIMIN (Autor:in) / SONG HUI (Autor:in) / LIU ER-MING (Autor:in)
09.09.2021
Patent
Elektronische Ressource
Englisch
Brick plugging structure construction method for underground balanced water pressure tube well
| Europäisches Patentamt | 2021
Plugging dam safety down under
| Online Contents | 2014
Air bag plugging device and plugging method for plugging shield tunnel
| Europäisches Patentamt | 2024