System and method for fracturing and gravel packing a wellbore
AssigneeBaker Hughes Incorporated
InventorMichael H. Johnson
Life of this patent
Estimating the term…
Abstract
A method is disclosed for fracturing and gravel packing a subterranean well. The method allows gravel slurry to be pumped at high rates to fracture the earthen formation adjacent the wellbore. Also, the method allows the annulus between the gravel pack screen or liner and the casing to be tested for annular gravel filling. The method abates the abrasive wear on the casing wall and eliminates the crossover service to normally utilize during gravel pack and Frac Pack operations.
Claims12
A method of altering wellbore fluid flow paths for treating a target reservoir comprising:
- positioning a screen or liner assembly including a flow control device adjacent a productive formation;
- positioning the entirety of a workstring at a spaced distance above the screen or liner assembly;
- performing a pumping operation with the entirety of said work string at a spaced distance above said screen or liner assembly for a sufficient time and at a sufficient rate and pressure to fracture the formation and while said flow control device is operative to regulate flow through said screen or liner in at least one direction;
- repositioning the workstring while it is in the wellbore to form a seal between the workstring and said screen or liner assembly including said flow control device;
- and
- evaluating an effectiveness of the treatment after said repositioning;
- producing through said screen or liner.
A method of altering wellbore fluid flow paths for treating a target reservoir comprising:
- positioning in the wellbore with a wireline a screen or liner assembly connected at the distal end of said wireline, where the assembly includes a flow control device;
- positioning the entirety of a workstring at a spaced distance above the screen or liner assembly;
- performing a pumping operation with the entirety of said work string at a spaced distance above said screen or liner assembly for a sufficient time and at a sufficient rate and pressure to fracture the formation and while said flow control device is operative to regulate flow through said screen or liner in at least one direction;
- repositioning the workstring while it is in the wellbore to form a seal between the workstring and screen or liner assembly including said flow control device;
- evaluating an effectiveness of the treatment after said repositioning;
- producing through said screen or liner.
A method of altering wellbore fluid flow paths for treating a target reservoir comprising:
- positioning a screen or liner assembly adjacent to a productive formation, where the assembly includes a flow control device;
- positioning the entirety of a workstring at a spaced distance above the screen or liner assembly;
- performing a pumping operation with the entirety of said work string at a spaced distance above said screen or liner assembly for a sufficient time and at a sufficient rate and pressure to fracture the formation and while said flow control device is operative to regulate flow through said screen or liner in at least one direction
- repositioning the workstring while it is in the wellbore to form a seal between the workstring and screen or liner assembly including said flow control device;
- evaluating the treatment after said repositioning;
- performing additional pumping operations for a sufficient time and at a sufficient rate and pressure to further fracture the formation:
- producing through said screen or liner.
A method of sand placement for treating a target reservoir comprising:
- positioning a screen or liner assembly adjacent to a productive formation with a flow control device in the screen or liner assembly;
- positioning the entirety of a workstring at a spaced distance above the screen or liner assembly;
- performing a pumping operation with the entirety of said work string at a spaced distance above said screen or liner assembly for a sufficient time and at a sufficient rate and pressure to fracture the formation and while said flow control device is operative to regulate flow through said screen or liner in at least one direction;
- repositioning the workstring while it is in the welibore to form a seal between the workstring and screen or liner assembly including said flow control device;
- evaluating the sand coverage of the screen or liner after said repositioning;
- producing through said screen or liner.
A method of sand placement for treating a target reservoir comprising:
- positioning a screen or liner assembly adjacent to a productive formation with a flow control device in the screen or liner assembly;
- positioning the entirety of a workstring at a spaced distance above the screen or liner assembly;
- performing a pumping operation with the entirety of said work string at a spaced distance above said screen or liner assembly for a sufficient time and at a sufficient rate and pressure to fracture the formation and while said flow control device is operative to regulate flow through said screen or liner in at least one direction;
- repositioning the workstring while it is in the wellbore to form a seal between the workstring and screen or liner assembly including said flow control device;
- evaluating the sand coverage of the screen or liner after said repositioning;
- performing additional pumping operations for a sufficient time and at a sufficient rate and pressure to further fracture the formation;
- and
- producing through said screen or liner.
A system for frac packing a well comprising a sand control screen or liner assembly adapted to be positioned adjacent a productive formation, where the assembly includes a flow control device that regulates flow through said screen or liner assembly in at least one direction as slurry is delivered to an annular space around said screen or liner assembly, a workstring adapted to position the assembly adjacent the productive formation and to be positioned in its entirety at a spaced distance above the assembly after assembly positioning, and a pump facility adapted to supply frac pack or gravel pack slurries to the assembly for a sufficient time, flow rate and pressure to fracture and pack the formation.
Dependencies are inferred from the claim text.