IP Library Granted Patent US 8,167,039
Granted Patent B2
US 8,167,039 · App. 13/243,867 · Granted May 1, 2012

Method of fracturing a subterranean formation at optimized and pre-determined conditions

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Quick Facts
Patent No.
US 8,167,039
App. No.
13/243,867
Granted
May 1, 2012
Kind
B2
Abstract

Prior to a hydraulic fracturing treatment, the requisite median diameter of a proppant, d prop , into a fracture of defined length, D PST , may be estimated in accordance with Equation (I): ( d prop ) 2 =( A )×(1/ q i )×( D PST ) B ×(1/ C TRANS )×(1/Δ SG PS )×(μ fluid )  (I) wherein: A is the multiplier and B is the exponent from the Power Law equation of velocity of the transport slurry vs. distance for the fracture geometry; q i is the injection rate per foot of injection height, bpm/ft; C TRANS is the transport coefficient; ΔSG PS is SG prop −SG fluid , SG prop being the specific gravity of the proppant and SG fluid being the specific gravity of the transport fluid; and μ fluid is the apparent viscosity of the transport fluid, in cP.

Claims (14)

1. A method of hydraulic fracturing a subterranean formation by introducing a transport fluid containing a proppant into a fracture of defined length, D PST , within the formation, the method comprising:

(a) determining the requisite median diameter of the proppant, d prop , for the fracture of defined length in accordance with Equation (I):

( d prop )=( A )×(1 /q i )×( D PST ) B ×(1 /C TRANS )×(1 /ΔSG PS )×(μ fluid )  (I)

wherein:

A is the multiplier and B is the exponent from the Power Law equation of velocity of the transport slurry vs. distance for the fracture geometry;

q i is the injection rate per foot of injection height, bpm/ft;

C TRANS is the transport coefficient;

ΔSG PS is SG prop −SG fluid , SG prop being the specific gravity of the proppant and SG fluid being the specific gravity of the transport fluid; and

μ fluid is the apparent viscosity of the transport fluid, in cP;

(b) introducing the transport fluid into the formation; and

(c) subjecting the formation to hydraulic fracturing and creating fractures in the formation defined by D PST .

2. The method of claim 1 , wherein the proppant is an ultra lightweight (ULW) proppant.

3. The method of claim 1 , wherein the transport fluid is slickwater.

4. The method of claim 1 , wherein the fracture geometry has a 1:1 to 5:1 aspect ratio.

Assignments (7)
CHANGE OF NAME Recorded Feb 16, 2022
From: BAKER HUGHES, A GE COMPANY, LLC
To: BAKER HUGHES HOLDINGS LLC
Reel/Frame 059142/0921 →
CHANGE OF NAME Recorded Feb 16, 2018
From: BAKER HUGHES INCORPORATED
To: BAKER HUGHES, A GE COMPANY, LLC
Reel/Frame 045349/0522 →
ENTITY CONVERSION Recorded Oct 4, 2017
From: BAKER HUGHES INCORPORATED
To: BAKER HUGHES, A GE COMPANY, LLC
Reel/Frame 044127/0001 →
CHANGE OF NAME Recorded Dec 19, 2011
From: BSA ACQUISITION LLC
To: BJ SERVICES COMPANY LLC
Reel/Frame 027409/0921 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 19, 2011
From: BJ SERVICES COMPANY LLC
To: BAKER HUGHES INCORPORATED
Reel/Frame 027409/0483 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 19, 2011
From: BRANNON, HAROLD DEAN
To: BJ SERVICES COMPANY
Reel/Frame 027409/0290 →
MERGER Recorded Dec 19, 2011
From: BJ SERVICES COMPANY
To: BSA ACQUISITION LLC
Reel/Frame 027409/0359 →