2PROK-DORZ-1 a Double-Packer BHA for Dual-Zone Injection through Double String (rated up to 5076 psi)

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2PROK-DORZ-1 a Double-Packer BHA for Dual-Zone Injection through Double String (rated up to 5076 psi)

It is used for dual-zone injection through double string in production strings with nominal outside diameter of 140 (5 1/2")-178 mm (7").

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Description
Technical characteristics

DESCRIPTION BHA APPLICATION ALLOWS:

to protect the production string against the injected corrosive medium;
to carry out dual injection and (or) shut off each interval from the wellhead;
to adjust the injection volumes and pressure for each interval from the wellhead;
to measure the volume of the injected fluid for each formation from the wellhead.

ADVANTAGES

reliable isolation of production string intervals;
replacement of the internal tubing string without BHA extraction;
attachments: equalizing valve and safety assembly allow to balance pressure of the BHA and annulus when retrieving as well as enhance the safety of repair and emergency works;
meets all the requirements for dual injection equipment.

TESTIMONIALS

Testimonial from “Bashneft-Dobycha” LLC
Testimonial from “Allianceneftegas” LLC

ARTICLES ABOUT PRODUCT

Oilfield Engineering No 6 2012 “Packer technologies and equipment innovations for dual production and dual injection”

SPECIFICATIONS

Type	Casing string, mm		BHA outside diameter, mm	Internal tubing string diameter of piping internal casing, mm	Passage bore diameter, mm (not less than)		BHA Connection thread as per GOST 633-80
	Nominal diameter	Wall thickness			Inside	General	Top (coupling)	Bottom (nipple)
2PROK-DORZ-1-118-59(40)-350-Т100²-К3-Х³	140	7-8	118	48	40.3	59	73	60
	146	9-11
2PROK-DORZ-1-122-59(40)-350-Т100²-К3-Х³	146	6.5-9	122
2PROK-DORZ-1-140-59(40)-350-Т100²-К3-Х³	168	8-11	140				89	73
2PROK-DORZ-1-142-59(40)-350-Т100²-К3-Х³	168	7-9	142
2PROK-DORZ-1-145-59(40)-350-Т100²-К3-Х³	178	7-14	145
2PROK-DORZ-1-118-59(35)-350-Т100²-К3-Х³	140	7-8	118	42	35.2		73	60
	146	9-11
2PROK-DORZ-1-122-59(35)-350-Т100²-К3-Х³	146	6.5-9	122
2PROK-DORZ-1-140-59(35)-350-Т100²-К3-Х³	168	8-11	140				89	73
2PROK-DORZ-1-142-59(35)-350-Т100²-К3-Х³	168	7-9	142
2PROK-DORZ-1-145-59(35)-350-Т100²-К3-Х³	178	7-14	145

¹BHA top is the coupling of the equalizing valve, BHA bottom is the nipple of the axial-set packer (upon request they can be supplied with subs according to applied standard sizes of the tubing).

²Upon a special request it is supplied for T=150C˚.

³Configuration number.

Sample code for BHA of the second configuration for 100˚C temperature when ordering:

2PROK-DORZ-1-118-59(40)-350-Т100-К3-2, where:

2PROK - a double-packer BHA by NPF “Paker” LLC;
DORZ - dual injection through double string;
1 - one emergency disconnection assembly;
118 - outside diameter is 118 mm;
59(40) - a passage bore of the BHA general part is 59 mm, internal one is 40 mm;
350 - maximum pressure differential, atm;
Т100 - maximum operating temperature is 100°С;
К3 - corrosive version K3 (carbon dioxide of more than 10% and hydrochloric acid of up to 20%);;
2 - the second configuration.