CN207453959U - A kind of apparent resistivity logging instrument electrode structure - Google Patents

Abstract

The utility model discloses a kind of apparent resistivity logging instrument electrode structure, including seven core cable；The seven core cable is externally provided with inside and outside two layers of armor；The signal wire of seven core cable is by the hole on signal wire, and with the lead flake being connected by scolding tin integrated setting, seven core cable outside is equipped with the perfluoroethylene-propylene suppressed, and most external is equipped with the Insulating A High-Voltage adhesive tape tightly wrapped.By using the utility model, instrument is more robust, and signal wire is placed in two layers of armor of cable, and underground stress is not easy to break；Reduce personnel's frequency of maintenance, increase durability, reduce personnel's maintenance workload.

Description

A kind of apparent resistivity logging instrument electrode structure

Technical field

The utility model is related to oil well loggings, and in particular to a kind of apparent resistivity logging instrument electrode structure.

Background technology

At present, apparent resistivity logging instrument electrode primary structure：It is with conventional seven core cable, such as a diameter of 11.8cm, Fig. 3 Shown in Fig. 4：

（1）Electrode overall structure：Production method is top inside and outside the cable in armor, and inside and outside armor is peelled off in lower part Shangrao, Directly distribution with high-voltage isulation adhesive tape with outside electrode trunk, suppressing, signal wire on request, leakage outside.

（2）Signal wire and mud contacts point：Signal wire（Copper wire）Outside is ambroin（Modified polypropene insulate）, believing Number line peels off the leakage of SI semi-insulation plastics 3-5cm copper wires, and the copper wire of leakage is connected lead flake（Increase signal wire and mud contacts face Product）, then interface twined with high-voltage isulation adhesive tape.

There are the shortcomings that：

（1）Seven easy stress of signal wire are broken：Seven signal line length 1.5m-5.75m do not have the protection of ectonexine armor, Blocked in shaft bottom, signal wire is easy in the case of under tension and is broken（It is completely disconnected, when it is disconnected when lead to）, signal external insulation plastics pull open Damage causes insulating layer damaged, can all lead to not obtain true log.

（2）Signal wire is easily increased by mud corrosion oxidation, resistance：At underground power supply used, signal wire and mud contacts, directly Together with being screwed up with the copper wire with insulating layer with lead flake, then with high-voltage isulation adhesive tape wind, such case is in the case where mud invades bubble, mud Copper wire burn into is eroded to the part with insulating layer by slurry always quickly, and signal line resistance is caused to increase, should be at 1 ohm Hereinafter, experiment curv effect is influenced, while in order to reduce this corrosion resistance is caused to increase up to tens ohms up to a hundred after corrosion Greatly, it is necessary to often be repaired（Polishing）, this copper wire that can only also solve leakage.

The content of the invention

The utility model is in view of the above-mentioned problems, provide a kind of apparent resistivity logging instrument electrode structure, including seven core cable；Institute It states seven core cable and is externally provided with inside and outside two layers of armor；The signal wire of seven core cable leads to by the hole on signal wire with the lead flake being connected Scolding tin integrated setting is crossed, the perfluoroethylene-propylene suppressed is equipped with outside seven core cable, most external is equipped with what is tightly wrapped Insulating A High-Voltage adhesive tape.

The advantages of the utility model：

By using the utility model, instrument is more robust, and signal wire is placed in two layers of armor of cable, and underground stress is not easy It breaks；Reduce personnel's frequency of maintenance, increase durability, signal probe is good with mud contacts point protection, and mud is not easy to permeate Enter, the cable heart does not allow perishable, reduction personnel's maintenance workload.

In addition to objects, features and advantages described above, the utility model also has other purposes, feature and excellent Point.Below with reference to figure, the utility model is described in further detail.

Description of the drawings

The attached drawing for forming the part of the application is used to provide a further understanding of the present invention, the utility model Schematic description and description does not form the improper restriction to the utility model for explaining the utility model.

Fig. 1 is the apparent resistivity logging instrument electrode structure schematic diagram of the utility model embodiment；

Fig. 2 is the interface processing schematic diagram of the apparent resistivity logging instrument electrode structure of the utility model embodiment；

Fig. 3 is existing apparent resistivity logging instrument electrode structure schematic diagram；

Fig. 4 is the interface processing schematic diagram of existing apparent resistivity logging instrument electrode structure.

Reference numeral：

1 it is seven core cable, 2 be signal wire, 3 be lead flake, 4 is perfluoroethylene-propylene.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining this Utility model is not used to limit the utility model.

With reference to figure 1, a kind of apparent resistivity logging instrument electrode structure as shown in Figure 1, including seven core cable 1；Seven core Cable 1 is externally provided with inside and outside two layers of armor；Seven core signal wires of the seven core cable on electrode mobile jib by peeling off ectonexine Armor takes out signal wire, sets separated time position, then draws and set after inside and outside armor is tied up again in signal wire main body；Seven The signal wire 2 of core signal wire is integrated with the lead flake 3 being connected by the way that scolding tin is molten through the hole on signal wire 2, outside be equipped with to The perfluoroethylene-propylene 4 of compacting, most external are equipped with the Insulating A High-Voltage adhesive tape tightly wrapped.

The utility model solves following two large problems（Purpose）：（1）Electrode logging device is solved in underground by pulling force, signal wire It easily breaks, causes instrument damage, it is necessary to buy again.（2）Electrode logging device signal wire is solved in underground by slurry erosion to be held It is oxidizable to cause signal line resistance increase that test effect is caused to reduce, it is necessary to often repair（It safeguards）, reduce person works' intensity.

（1）Without lower loop around signal wire is drawn up, ectonexine armor is peeled off on electrode mobile jib, takes out signal wire, Separated time position is set, then inside and outside armor is tied up again in signal wire main body.So signal wire main body just has inside and outside armor to protect. Easy fracture is not allowed in shaft bottom again after by pulling force.See Fig. 2.

（2）By the small part signal wire of leakage, the copper wire leading portion with insulating layer is peeled off, punched on lead flake, by copper wire It is tightened with lead flake.Melt scolding tin drop and leakage copper wire and the part with insulating layer and copper wire and lead flake part with soldering iron, make weldering Tin silk and copper wire are combined closely no gap（Mud solution cannot reach intrusion signal line）, with perfluoroethylene-propylene by band There is insulation layer segment and together with copper wire, copper wire be fused to lead flake coupling part, make an entirety, mud solution is not easy Corrode copper wire part, it is not easy to allow copper wire（Signal wire）Oxidation, resistance increase, and can save the labor intensity of people, reduce signal Line influences greatly by the high test curve of resistivity is corroded.

By using the utility model, instrument is more robust, and signal wire is placed in two layers of armor of cable, and underground stress is not easy It breaks；Reduce personnel's frequency of maintenance, increase durability, signal probe is good with mud contacts point protection, and mud is not easy to permeate Enter, the cable heart does not allow perishable, reduction personnel's maintenance workload.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within new spirit and principle, any modifications, equivalent replacements and improvements are made should be included in the guarantor of the utility model Within the scope of shield.

Claims (1)

1. a kind of apparent resistivity logging instrument electrode structure, including seven core cable（1）；It is characterized in that, the seven core cable（1）Outside Equipped with inside and outside two layers of armor；Seven core cable（1）Signal wire（2）By signal wire（2）On hole, with the lead flake being connected（3）It is logical Cross scolding tin integrated setting, seven core cable（1）Outside is equipped with the perfluoroethylene-propylene suppressed（4）, most external be equipped with to The Insulating A High-Voltage adhesive tape tightly wrapped.