Patent ID: 9683432
Date: 2017-06-20
CPC Classifications: E21B

Claim:
1. A fracturing method comprising: pumping a first stream of proppant-free liquefied petroleum gas and gelling agent with a first frac pressure pump through a first surface line into a wellhead through a first port of the wellhead; pumping a second stream of lubricated proppant with a second frac pressure pump through a second surface line separate from the first surface line into the wellhead through a second port of the wellhead that is separate from the first port of the wellhead; removing fluid from the second stream of lubricated proppant with a proppant intensifier prior to the second stream entering the second port of the wellhead, wherein the proppant intensifier removes fluid from the second stream after the second frac pressure pump; the first stream and the second stream having respective velocity vector components that are directly opposite to each other both (a) upon exiting the first port and the second port, respectively, and (b) up to a point within the wellhead where the first stream and the second stream meet, thereby combining the first stream and the second stream within the wellhead into a combined stream; pumping the combined stream into a hydrocarbon reservoir; pumping a treatment fluid comprising an acid spearhead with the second frac pressure pump into the wellhead, wherein the treatment fluid has a higher density than the first stream, and the treatment fluid is pumped to provide a fluid cap over the combined stream in the hydrocarbon reservoir; and subjecting the combined stream in the hydrocarbon reservoir to fracturing pressures.