Mandrel will not transmit any torque/drilling force and also, not subjected to any rotational force. It will be lowered and anchored at pre-defined depth and Drill bit will be passed through its concave curvature (hole) for directional drilling. It will be subjected to only Drag force while...
Hi All,
We have ordered one Drilling Tool (Whipstock) which should be made of single piece Tubular mandrel. But supplier has come up with a deviation request that the supplied Tool will be of welded type instead of single body type due to concave curvature configuration & associated machining...
Hi all,
We want to weld a Drilling tubular material with Vanes (rectangular shaped blades). Tubular material T-95 grade (API 5CT) of size 13” OD to be welded(fillet weld) with AISI 1040 carbon steel material of size 100 mm length x 15 mm thickness (rectangular bars).
What should be pre-heat...
Thank you all for your insight. We have decided to go ahead with the original WPS (original production weld) for repair too as "essential variable & welding process (where weld repair required i.e. SMAW)" are same.
Thank you again for valuable time in responding to my query.......
Hi All,
We have one weld repair job and our contractor submitted the repair specific WPS. But, they submitted the original PQR which is applicable for production welding WPS.
The details are as: Repair welding WPS (process SMAW and SAW) no PWHT, code ASME IX
Production...
Thanks SPD. The required hydro test will be done on Wellhead equipment and Gate valves. The wetting agent and dye are generally mixed with testing medium (water) and as per Client's information, the objective is to enhance the sensitivity of test.
Hello,
Our client specification calls for hydrotesting with water containing “client approved type/concentration of wetting agent” and fluorescent dye.
As per my understanding, fluorescent dye is used to enhance the sensitivity of test as we utilize it in Dye penetrant examination(surface...
Thank you Sen,
We have been using the Tungsten Carbide (GV70D/GV 50H) hard-facing since many years even bit stringent sour service applications and had no issues. Our concern is on raw material selection for Seat pocket which was machined out from Valve body (material grade AISI 4130) and Seat...
Dears,
In our upstream application, one of the Gate Valve of Wellhead equipment is found to be leaking after 3 years in service. Upon retrieval and post disassembly inspection, it was observed that seat pocket area, and seat were corroded with a significant metal loss. Also, there is evidence...
Thank you jmec87 and gerhard for your feedback. It is now accepted by end user. After assembly, FAT will be done with third party witness. Moreover, it is not going to be permanently installed for Sub-sea application. After intended operation, it will be retrieved.
Hi,
We have placed the order for Sub-sea API 17D Gate Valves with API Monogram requirement. We are informed by the supplier that Gate Valve will be supplied as per API 6A design with Hydraulic Actuator (as per API 17D). However, this Gate Valve Assembly will not be monogrammed due to mix-up of...
In API 6A, there is no reference to TRIM material's mechanical strength requirements for a specific rated working pressure like what it is specified for Body/Bonnet/End Connectors in Table 7 of API6A. For Trim material, it shall be as per Manufacturer's (OEM's), written specification based on...
Hi All,
“Our hydraulic actuator assembled Gate Valve” started leaking during operation. During the preliminary investigation, it was found that the maximum hydraulic oil working pressure for actuator is 3,000 psi whereas applied inlet pressure was 4,000 psi. However, after dismantling and...
Sorry for the delayed response.
Diameter: 30" and length (forgings with various length's: 6", 26" & 18" to be used for different length's of products).
Thank you Ed & JR.
Material is forged AISI 4130 75 KSI Round Bar.
""Other than that, the alternative is to calibrate on a larger than specification diameter calibration hole or use a loss of back reflection test. Both of those options will reduce the sensitivity of the test"".
This seems to...
Dear Experts,
As per our project specification, prior to machining, our sub-contractor shall perform UT on raw forgings of size above 30" (Ref. Standard: API 6A/ASTM A388/ASTM E428).
Now, sub-contractor is declining to perform UT on raw material as they are saying that reference standard...
Dear Experts,
We have one weldment job and as per BOM, Main plate (AISI 4130 60 KSI) will be welded onto supporting Gusset plates (EN 10025 S335). Our our vendor has submitted WPS in which Base metals are: AISI 4130 7KSI X API 5L Gr. X65. Can we accept this WPS as per ASME IX...
Original rating was 5K; but, as per OEM's design analysis, it is being uprated to 7K for intended service application.
In MTR, yield strength and tensile strength values are meeting 75K criteria. There is only issue with hardness value. Type of Wellhead equipment: Drilling adapter (as per API...
