초록 ▼

Apparatus for controlling the operation of drilling or completion fluid pumps and a choke is disclosed. Control over the drilling or completion fluid pump can be independent of control of the choke. Control over the drilling fluid pump can be transferred to the choke control location. Pneumatic and

Apparatus for controlling the operation of drilling or completion fluid pumps and a choke is disclosed. Control over the drilling or completion fluid pump can be independent of control of the choke. Control over the drilling fluid pump can be transferred to the choke control location. Pneumatic and electrical networks suitable for use with engine driven and electrically powered rigs are disclosed.

대표청구항 ▼

Apparatus for controlling the circulation of fluid in a subterranean well comprising: a pump; a choke communicable with the pump; pump monitoring means for regulating the pump speed to vary the flow rate of the circulating fluid; choke monitoring means located at the surface of the well remote from

Apparatus for controlling the circulation of fluid in a subterranean well comprising: a pump; a choke communicable with the pump; pump monitoring means for regulating the pump speed to vary the flow rate of the circulating fluid; choke monitoring means located at the surface of the well remote from the pump monitoring means and including choke regulating means for varying the fluid flow area through the choke to control the pressure of the circulating fluid as the flow rate is changed by variations in the pump speed; the improvement comprising: a second pump control means incorporated in the choke monitoring means and communicable with the pump through the pump monitoring means for regulating the pump speed. A method for use in controlling the circulation of drilling fluid between the surface and the borehole of a subterranean well from a choke monitoring console proximate to a choke and remote from a pump and from a drilling monitoring console on a drilling rig, comprising the steps of: controlling the pump from the drilling monitoring console and the choke from the choke monitoring console in the absence of an overriding signal from the choke monitoring console to the drilling monitoring console; overriding control of the pump by the drilling monitoring console by transmitting an overriding signal to the drilling monitoring console from the choke monitoring console; and thereafter, controlling both the pump and the choke from the choke monitoring console.