Drill Stem Testing tools 3 7/8" Safety Joint

Model: KW-DST-Safety Joint-088
Place of Origin: Shaanxi,China (Mainland)
Certification:: API, ISO
working pressure: 10000psi ~ 15000psi
Working condition: High pressure high temperature(HPHT)
Size:: 3 7/8" Safety Joint
service:: H2S, CO2
Application: Drill stem testing,full bore drill stem testing
Brand Name: Kingwell
package: wood case or steel carton
Type:: RTTS Safety Joint
Condition:: New


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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:1.0 USDProduction Capacity:100 sets per month
Trade Term:FOB,CFR,CIF,DDP,DAP,CIP,CPT,FCA,EXWPacking:wood case or steel...
Payment Terms:L/C, T/TDelivery Date:within 1-2 month(s)...
Min. Order:1 Set/Sets
Means of Transport:Ocean

DST(Drill Stem Testing)  tools 3 7/8" RTTS Safety Joint

Application: Drill Stem Testing

Type:RTTS Safety Joint

working pressure:10000psi ~ 15000psi

Working condition:High pressure high temperature(HPHT)

Size: 3 7/8" 
service:H2S, CO2
package:wood case or steel carton

Briefly Introduce

The RTTS safety joint is an optional emergency backoff device. The safety joint releases the workstring and tools above the packer if the packer becomes stuck during operations. The design of the RTTS safety joint makes unintentional operation difficult.

Features and Benefits

• Positive sequence of operation helps prevent premature release.

• Tools above it can be retrieved when string is stuck.


The RTTS safety joint is run immediately above the RTTS packer so that the greatest number of tools above the packer can be removed. Before the safety joint can be used, a tension sleeve located on the bottom of the lug mandrel must first be parted by pulling up on the workstring. After the tension sleeve has parted, the safety joint is

released by right-hand torque while the workstring is rotated a specified number of cycles.

These are the most common sizes. Other sizes may be available.

The values of tensile, burst, and collapse strength are calculated using new tool conditions, Lame's formula with Von Mise's Distortion Energy theory for burst and collapse strength, and stress area calculations for tensile strength.

1. Halliburton type, all could change with Halliburton parts.
2. All equipments are produced according to API standard NACE MRO175-2002
Below are specfor you reference:




in. (cm)


in. (cm)




in. (cm)


Rating** lb (kg)


Rating**psi (kPa)




2 3/8





1.06 10 RD




(16 330)





4 1/2 to 5





2 3/8 EUE




(43 092)


(79 290)


(79 2 90)

7 to 7 5/8





2 7/8 EUE




(74 390)


(82 738)



8 5/8 to 13 3/8





41/2 IF




(136 533)


(94 459)


(71 706)


Kingwell is a CNPC & SINOPEC & BV certified company, having all the Quality Systems in place for design, planning, manufacturing and quality monitoring & traceability to ensure our products match the highest quality standards.

We test our products strictly according to the NACE MR 0175-2002 Standard and our quality assurance period is 12 months.

Certificates endorsed by DNV/BV/ABS and Documents we can supply with the shipments:

1. Pressure Test Certificate with Graph and time recorded.

2. Function Test   

3. Rubber Products NACE Compliance   

4. Material Mill Certificate and treatment characteristics

5. H2S Compliance   

6. Service Manual

7. Parts Manual

8. Testing Procedures.

9. Open up type tool drawing for dressing purpose– if any.
DST tools3 7/8Safety Joint

Design & Development

Kingwell has an ongoing relationship with Xi'an Petroleum University and built up long term cooperation with China Aerospace Group for more than 10 years. Design Department is familiar with CAD and Pro-E facilities and has on rolls qualified & experienced engineers. Now, they are engaged in development of new products as required in the market place. Kingwell' products are validated in-house in a Test Well, a Sub-surface Type Test Facility with simulated well conditions up to 15000 psi Differential pressure , 400°F and Max 450°F.

Manufacturing Facility

Equipped with latest machining facilities like CNC 3-axis Turning centers, CNC 4-axis milling centre, high temperature heat treatment furnaces, Centre lathe machines, Deep Hole Drilling, Boring & Honing machines, our company could meet long term production target and be governed efficiently by well-qualified and experienced Board of Directors and Engineers.

The following is the manufacturing workshop.
DST tools3 7/8Safety Joint

Training and Field Supports

We have a team of well qualified and experienced field support personnel for Training. According to customer's requirements, we provide operation training service for our customers who purchase our products.

Generally speaking, our customer training mainly includes followings:

1) To know the basic knowledge of the products, such as the usage, the working environments, the working principles, the structure, ect.

2) To learn the operation and use of products.

3) To master the basic requirement of designs of tool strings and of testing operation.


We believe in Customer delight, achieved by the supply of Quality Products & Services and Continual Improvement in our Manufacturing Processes for timely delivery at competitive prices. We work in a professional, competitive, and cost-effective manner consistent with the Customer requirement

We are looking forward towards a long lasting association with your esteemed organization for our mutual benefit. Any reasonable documents with the shipments depend on your requirements. Please contact us for any enquiry within our manufacturing scope and we will be happy to serve you by supplying quality products.

Category: RTTS Safety Joint

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