Landing Nipple and Lock Mandrel

 

Landing nipples are downhole components, fabricated as a short section of heavy wall tubular with a machined internal surface that provides a seal area and a locking profile. The Landing Nipples are included in most completions at a pre-determined intervals to enable the installation of flow-control devices, such as Plugs and Chokes.

 

Three basic types of Landing Nipples are commonly used: No-Go Nipples, Selective-Landing Nipples and Ported Safety Valve Nipples. The Landing Nipples have the same Packing Bore ID for a particular tubing size and weight. ‘LNX’ and ‘LNXN’ Landing Nipples are designed for use with standard weight tubing. ‘LNR’ and ‘LNRN’ Landing Nipples are for heavy weight tubing. The ‘N’ designation is for No-Go Nipples.

 

The completion can have as many LNX and LNR selective nipples with the same ID in any sequence as desired on the tubing string. This versatility result in an unlimited number of positions for setting and locking subsurface flow controls. The flow control, which is attached to the required lock mandrel, is run in the well via the selective running tool on the slickline.

 

Features and Benefits

 

Large bore for minimum restriction

Universal nipple with one internal profile

Lock mandrel locks design to holds pressure from above and below

Extra large ID for high flow rate

Simple operation 

Versatility helps reduce completion and production maintenance costs

Multiple options when running, setting, or retrieving subsurface flow controls

Field proven

Versatility helps reduce completion and production maintenance costs

 

Applications

 

Gauge hangers for bottom hole pressure/temperature surveys

Almost unlimited locations for setting and locking subsurface flow controls

Lock Mandrel with plugs holds pressure from above and below

Setting packers

Killing the well

Removing the wellhead

Technical Data

Tubing								For Standard Tubing Weights
								LNX profile		LNXN profile
Size		Weight		ID		Drift		Packing bore		Packing bore		NO-Go ID
in.	mm	Lb/ft	Kg/m	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm
2 3/8	60.3	4.6	6.85	1.995	50.67	1.901	48.29	1.875	47.63	1.875	47.63	1.791	45.49
		4.7	6.99
2 7/8	73	6.4	9.52	2.441	62	2.347	59.61	2.312	58.72	2.312	58.72	2.205	56.01
		6.5	9.67
3 1/2	88.9	9.3	13.84	2.992	76	2.867	72.82	2.812	71.42	2.812	71.42	2.666	67.72
		10.2	15.18	2.992	74.22	2.797	71.04	2.75	69.85	2.75	69.85	2.635	66.93
4 1/2	114.3	12.75	18.97	3.958	100.5	3.833	97.36	3.812	96.82	3.812	96.82	3.725	94.62
5 1/2	139.7	17	25.3	4.892	124.3	4.767	121.1	4.562	115.87	4.562	115.87	4.455	113.2