The K344 steel frame expansion packer is set and unsealed in such a way that no mechanical movement is required during operation. Therefore, there are advantages to operating in horizontal and inclined Wells. It is applied to the construction technology of oil field such as stratified water injection, stratified acidification, stratified plugging, stratified fracturing and drag fracturing.

Working Principle

The K344 steel skeleton packer is composed of six parts: lower joint, floating head, rubber barrel, center pipe, liquid inlet hole and upper joint. The rubber barrel is a three-layer structural rubber barrel with high elastic and high strength stainless steel belt as the skeleton layer.
K344 is a hydraulic expansion packer, mounted, hydraulically set, hydraulically unsealed. The oil and casing ring space is sealed by expanding the rubber cylinder outwards.

Specifications

Type	Length ±5mm	Max OD of cylinder  mm	Min  NDof cylinder mm	Sealing  differential  pressure  Mpa	Worktemperature ℃	Work  pressure  Mpa	Thread connection	Suitable  casing  mm
K344-56	1050	56	12	＞5	120-150	7-15	1  1/2″TBG	5 1/2″/7″
K344-70	1050	70	26	＞5	120-150	25-30	1  1/2″TBG	5 1/2″/7″
K344-80	1430/1740	80	36	＞5	120-150	50-75	2  3/8″TBG	88—110
K344-90	1430/1740	90	36	＞5	120-150	50-75	2  3/8″TBG	99—126
K344-99	1430/1740	99	46	＞5	120-150	50-75	2  3/8″TBG	108—128
K344-105	1450/1740	105	46	＞5	120-150	50-75	2  7/8″TBG	114—128
K344-110	1750/1670	110	55	＞5	120-150	50-75	2  7/8″UPTBG	118—128
K344-114	1750/2030	114	55	＞5	120-150	50-75	2  7/8″UPTBG	122—130
K344-128	2030	128	55	＞5	120-150	50-75	2  7/8″UPTBG	136—150
K344-138	2030	138	55	＞5	120-150	50-75	2  7/8″UPTBG	150-165
K344-142	2050	142	57	＞5	120-150	50-75	2  7/8″UPTBG	150—165
K344-160	2050	160	57	＞5	120-150	50-75	2  7/8″UPTBG	165—185
K344-178	2050	178	57	＞5	120-150	50-75	2  7/8″UPTBG	185—220
K344-196	2050	196	57	＞5	120-150	50-75	2  7/8″UPTBG	210-220

Features

• With large expansion coefficient, large diameter holes can be sealed with small diameter rubber cylinders.
• Easy to expand and contract, that is, easy to seal and unseal.
• Temperature resistance class: 150℃.
• Pressure difference is large.
• The residual deformation is small.
• It has strong adaptability to boreholes and can be used in the technological measures of casing deformation Wells and open hole Wells.
• The liquid inlet channel of the central pipe is replaced by a long slit instead of a round hole.
• Seat seal is reliable.
• Reusable (in formation testing).