Drop tool impact shock mitigation with fluid retention method and system
AssigneeScientific Drilling International, Inc.
InventorJason RAPP
Life of this patent
Estimating the term…
Abstract
Methods and systems provide for landing a tool downhole in a tool dropping operation. In situations where loss of fluid introduced into a tubular string occurs resulting in an interior volume of the tubular string becoming dry or gaseous, a plug is seated in the tubular string and the tubular string is filled with a liquid before the tool is lowered through the tubular string in the tool dropping operation. The tool travels safely through the liquid and lands at a profile above the plug. Thereafter, the plug may be unseated and caught lower within the tubular string to enable reestablishing flow from inside to outside of the tubular string.
Claims20
A method of landing a tool downhole in a tool dropping operation, comprising:
- running a tubular string into a wellbore, wherein the tubular string includes a seat defining a first restriction in an inner diameter of the tubular string and a landing profile defining a second restriction in the inner diameter of the tubular string above the seat;
- dropping a plug into the tubular string and onto the seat to block fluid flow through the seat;
- filling the tubular string above the plug on the seat with a liquid-based fluid;
- and
- passing the tool in the tool dropping operation through the fluid until an outward extending landing element of the tool is retained at the landing profile.
Tool deployment system for a tool dropping operation to land a tool downhole, comprising:
- a tubular string disposed in a wellbore;
- a seat defining a first restriction in an inner diameter of the tubular string;
- a plug retainable by the seat to block fluid flow through the seat;
- a landing profile defining a second restriction in the inner diameter of the tubular string above the seat;
- and
- an outward extending landing element of the tool for retention of the tool at the landing profile as the tool travels through the tubular string in the tool dropping operation.
A method of landing a measuring device downhole in a tool dropping operation, comprising:
- drilling a wellbore with a drill string having a bit at a distal end of the drill string, wherein inside the drill string includes a seat and a landing profile above the seat;
- dropping a ball onto the seat to block fluid flow past the seat;
- filling the drill string above the ball on the seat with a liquid-based fluid;
- passing the measuring device in the tool dropping operation through the fluid until a landing cone of the measuring device is caught at the landing profile;
- logging the wellbore with the measuring device;
- pushing the ball through the seat by increasing fluid pressure above the ball;
- catching the ball at a location in the drill string above the bit after the ball is pushed through the seat;
- and
- establishing flow of the fluid from the drill string above the location with the ball to out of the drill string exiting below the location with the ball.
Dependencies are inferred from the claim text.